Vesto Slipher: Uncovering the Cosmos

The Andromeda Galaxy. Courtesy of NASA.
The Andromeda Galaxy. Courtesy of NASA.

This article was originally published on the Hoosier State Chronicles blog on August 26, 2016.

The known universe is big; insanely big! At a staggering age of 13.8 billion years, our observable universe has a diameter of 92 billion light-years. Over the last century, astronomers, physicists, and mathematicians have helped us understand a more precise measurement of the size of the universe and how it has changed over time. The prevailing theory is the “Big Bang,” which, “At its simplest, [it] talks about the universe as we know it starting with a small singularity, then inflating over the next 13.8 billion years to the cosmos that we know today.” A key component of Big Bang cosmology, “Expansion Theory,” stipulates that the universe is expanding, rather than a static state, which accounts for the changing distances of stars and galaxies. So, how did we come to this conclusion?

Red and blue shift. Courtesy of Caltech.
Blue and red shift. Courtesy of Caltech.

Part of our understanding of the expanding universe has benefited, in no small part, to an Indiana farmer’s son named Vesto Slipher. Slipher developed spectrographic methods that allowed researchers to see a Doppler effect in the distances of what were then called “spiral nebula,” what we today call galaxies. Simply put, by measuring the longer wavelength red shift (objects moving away) and shorter wavelength blue shift (objects moving closer), Slipher demonstrated that the universe was not static. In fact, it was expanding and often pushing objects towards each other. Slipher’s name doesn’t get regularly name-checked as one of the greatest scientists of all-time, but his contributions helped to establish our current view of the cosmos.

Vesto Melvin Slipher. Courtesy of the National Academy of Sciences.
Vesto Melvin Slipher. Courtesy of the National Academy of Sciences.

Vesto Melvin Slipher was born on November 11, 1875 on the family farm in Mulberry, Indiana. As biographer William Graves Hoyt noted, Slipher’s early life on the farm “helped him develop the strong, vigorous constitution that later stood him in good stead for the more strenuous aspects of observational astronomy.” Slipher received a B.A. (1901), M.A. (1903), and Ph.D (1909) in Astronomy from Indiana University. His Ph.D. dissertation paper, The Spectrum of Mars, which tentatively identified atmospheric characteristics (namely, water vapor) on the red planet.

The Indianapolis Journal, June 19, 1901. Courtesy of Hoosier State Chronicles.
The Indianapolis Journal, June 19, 1901. Courtesy of Hoosier State Chronicles.
The Indianapolis Journal, June 8 1903. Courtesy of Hoosier State Chronicles.
The Indianapolis Journal, June 8 1903. Courtesy of Hoosier State Chronicles.

Slipher’s professional career in science began in August of 1901, when he moved to Flagstaff, Arizona to fill a vacancy at the Lowell Observatory. Founded by the idiosyncratic Dr. Percival Lowell, Lowell Observatory became one of the foremost institutions of astronomy during the early 20th century. As the Coconino Sun put it, the observatory, “is known and recognized all over world for its discoveries and correct calculations.”

Dr. Percival Lowell, founder of the Lowell Observatory. Courtesy of Wikipedia.
Dr. Percival Lowell, founder of the Lowell Observatory. Courtesy of Wikipedia.
Lowell Observatory. Courtesy of the Wall Street Journal/State of Arizona.
Lowell Observatory. Courtesy of the Wall Street Journal/State of Arizona.

Lowell’s chief pursuit with the observatory was to prove that there were inhabitants on Mars, and hired young Slipher to help him. As early as 1908, Slipher found evidence through his spectroscopic techniques that Lowell may be on to something. The Washington Herald reported that V. M. Slipher (newspaper articles almost always identified him in print with just his initials) and his brother, Earl C. Slipher, “discovered evidences of the presence of water in the atmosphere of Mars. . . .” Sometime later, on May 20, 1909, the Hopkinsville Kentuckian noted that Slipher’s observations, “favor the view that the whitecaps about Mars poles are composed of snow rather than of hoarfrost,” and that “prevalent conditions of Mars . . .are those of a mild but desert climate, such as Professor Percival Lowell has asserted exists there.”

The Washington Herald, April 05, 1908. Courtesy of Chronicling America.
The Washington Herald, April 05, 1908. Courtesy of Chronicling America.

Lowell’s interest in Mars, emboldened by Slipher’s results, intensified. In 1912, Slipher helped install a 13,000 feet high telescope in the San Francisco Mountains so as to refine his measurements. Slipher’s efforts culminated in a 1914 announcement of further confirmation to his Water Vapor hypothesis. The Washington, D.C. Evening Star wrote that, “while the amount of water is difficult to determine, the estimates placed it at about one-third that of the atmosphere of the earth.” While Slipher and Lowell never found Martians on the red planet, their findings established atmospheric models that are still corroborated by scientists to this day.

The Los Angeles Herald, November 24, 1909. Courtesy of Chronicling America.
The Los Angeles Herald, November 24, 1909. Courtesy of Chronicling America.

With his research on Mars, Slipher was only getting started. His real passion was observing the position and velocities of “spiral nebula,” and he used his spare time away from his Mars projects to advance his research. His early successes convinced Dr. Lowell to give him time devoted to this research. It came with spectacular results. In 1912, Slipher began recording spectrographic results of the Andromeda Nebula (now known as the Andromeda Galaxy) and found that they were blue-shifting, which indicated that the nebula was “not within our galaxy.” “Hence we may conclude,” Slipher observed in his published findings, “that the Andromeda Nebula is approaching the solar system with a velocity of about 300 kilometers per second.” Within the next couple of years, Slipher also discovered that the Andromeda Nebula was also rotating as it traveled, and published these results in a subsequent article. From there, the results went to the press; the Daily East Oregonian published the findings in its November 15, 1915 edition. The Caldwell Watchmen in Columbia, Louisiana also reported that the Nebula was traveling at an unprecedented speed of “186 miles a second.” Similar articles were published in the Ashland, Oregon Tidings and the Albuquerque Evening Herald.

The East Oregonian, November 25, 1915. Courtesy of Chronicling America.
The East Oregonian, November 25, 1915. Courtesy of Chronicling America.

Slipher eventually observed the speeds of 15 nebulae, shared his findings at the 1914 American Astronomical Society meeting, and “received a standing ovation.” His results were then published by the society in 1915, demonstrating that the average velocity of these nebulae at 400 kilometers a second. A few years later, in 1921, Slipher found a record-breaking nebula called Dreyer’s Nebula (known today as IC 447) that was traveling away from our galaxy at 2,000 kilometers a second! With nebulae moving at varying velocities and in varying directions, Slipher’s research had started a conversation about the need to reevaluate the static theory of the universe. Why were these nebula acting like this?

The Washington, D.C. Evening Star, January 17, 1921. Courtesy of Chronicling America.
The Washington, D.C. Evening Star, January 17, 1921. Courtesy of Chronicling America.
Edwin Hubble. Courtesy of Sonoma State University.
Edwin Hubble. Courtesy of Sonoma State University.

In comes Edwin Hubble, the lawyer-turned-astronomer with the dashing looks of a movie star who pushed our understanding of the universe even further (Like Slipher, Hubble also had an Indiana connection as he taught and coached basketball at New Albany High School during the 1913-14 academic year) . As physicist Lawrence Krauss noted, Hubble used Slipher’s data on spiral nebula, combined with new observations he obtained with colleague Milton Humason, to postulate a new cosmological law. This new theorem, called “Hubble’s Law,” argued that there was a direct “relationship between recessional velocity and galaxy distance.” In other words, the farther away a galaxy is, the faster it is moving. These results flew in the face of both Isaac Newton and Albert Einstein’s notions of the universe, which argued for a static universe. If Hubble was right, the universe was actually expanding.

To test this idea, Hubble began a new series of spectrographic experiments in the 1930s. The Muncie Post-Democrat reported on one of these experiments on November 25, 1938:

The answer [to the expansion theory], they said, may be found when the new 200-inch reflector, cast in Corning, N. Y., glassworks, is completed. If the universe is expanding, the giant reflector being built on Mt. Palomar, in California, may indicate the type of expansion. The new mirror will collect four times as much light as the 100-inch Hooker reflector now in use at Mt. Wilson.

The Muncie Post-Democrat, November 25, 1938. Courtesy of Hoosier State Chronicles.
The Muncie Post-Democrat, November 25, 1938. Courtesy of Hoosier State Chronicles.

These further experiments reaffirmed Hubble’s earlier conclusions and the expansionary model of the universe became the standard-model. The evidence was so overwhelming that Einstein changed his mind and accepted the expansionary theory. Like with his work on Mars, Slipher’s early observations helped to uncover a field-altering discovery, and as biographer William Hoyt concluded, his research “enabled astronomers to gauge the approximate age and dimensions of the known universe.”

Clyde Tombaugh, the discoverer of Pluto. He was assisted by Slipher in his discovery. Courtesy of NASA.
Clyde Tombaugh, the discoverer of Pluto. He was assisted by Slipher in his discovery. Courtesy of NASA.

Even after his momentous research on spiral nebula, Slipher continued to be involved in key discoveries. For example, Slipher assisted in the discovery of the planet (now dwarf planet) Pluto! A January 2, 1920 article in the Coconino Sun recalled that, “Dr. Slipher said he believes it is true that there is an undiscovered planet. This belief is due to peculiar actions of Uranus, who gets kind of wobbly sometimes in her course around the sun.” To confirm these claims, Slipher brought young scientist Clyde Tombaugh onto the project in 1928. After many attempts of photographing the unknown body, and Slipher even missing it in some telescopic photographs, Tombaugh finally discovered Pluto on February 18, 1930. The New York Times later reported the discovery on April 16, 1930. “Denial to the contrary,” the Times wrote, “Dr. V. M. Slipher, director of the Lowell Observatory [here], believes evidence indicates that the recently discovered “Planet X” is the long-sought trans-Neptunian planet, and is not a comet.” While Tombaugh rightfully gets the credit for the discovery, Slipher’s hard work in assisting the young scientist should count as one of his accomplishments.

The Coconino Sun, January 2, 1920. Courtesy of Chronicling America.
The Coconino Sun, January 2, 1920. Courtesy of Chronicling America.
Slipher in his later years. Courtesy of the New York Times.
Slipher in his later years. Courtesy of the New York Times.

Slipher retired from the Lowell Observatory in 1952 and spent the remaining years of his life involved in minor astronomical work and community affairs before he passed away in 1969, at the age of 94. While not a household name, Slipher’s achievements in astronomy are legendary, from his discovery of the atmospheric conditions of Mars and assisting with the discovery of Pluto to his ground-breaking research on spiral nebulae that led to our understanding of the expanding universe. In short, he helped science, and in turn humanity, further uncover the mysteries of the cosmos. Pretty good for a farm boy from Mulberry, Indiana.

Dr. Harvey “Old Borax” Wiley and His Poison Squad

hwwiley-02
Harvey Washington Wiley, M.D. Image courtesy of U.S. Food and Drug Administration.

For many people, the first thing that comes to mind when thinking of the early Pure Food movement is Upton Sinclair’s 1906 book The Jungle. However, Hoosier Harvey Wiley’s work in the field was already at its apex when Sinclair’s exposé was released. When Dr. Wiley started his career in the mid- to late-19th century, the production of processed foods in the US was on the rise due to the increasing number of urban dwellers unable to produce their own fresh food. With little to no federal regulation in this manufacturing, food adulteration was rampant. Dr. Wiley made it his mission prove the importance of food regulation. With the help of a group of men known as the Poison Squad, he did just that.

Harvey Washington Wiley was born on a small farmstead near Kent, Indiana on October 18, 1844. He attended Hanover College from 1863-1867, with the exception of a few months in 1864 when he served in Company I of 137th Indiana Volunteers during the Civil War. After graduating in 1867, Wiley moved to Indianapolis and began teaching at Butler University while earning his Ph.D. from the Medical College of Indiana. It was in 1874 that Dr. Wiley began his work as a chemist at Purdue University, where he developed an interest in adulterated food. Wiley argued that mass-produced food, as opposed to food produced locally in small quantities, contained harmful additives and preservatives and misled consumers about what they were actually eating. In the coming decades, Wiley would prove that this theory was correct and serve as one of the public faces of the pure food movement. As a 1917 advertisement in The (New York) Sun put it:

“Dr. Wiley it was who, at Washington, first roused the country to an appreciation of purity and wholesomeness in foods. He has been the one conspicuous figure in food betterment and food conservation in the present generation.”

In 1883, Wiley was appointed Chief Chemist of the Bureau of Chemistry, a division of the United States Department of Agriculture. While serving in this capacity, Wiley made the establishment of federal standards of food, beverages, and medication his priority. To this end, governmental testing of food, beverages, and ingredients began in 1902. The most famous of these tests were the “hygienic table trials,” better known by the name given to them by the media: “The Poison Squad.”

The Poison Squad
The “twelve young clerks, vigorous and voracious,” who made up the Poison Squad, sit six to a table. Image courtesy of U.S. Food and Drug Administration Flickr page.

During these trials, “twelve young clerks, vigorous and voracious” were fed and boarded in the basement of the Agricultural Department building in Washington D.C. Before each meal the men would strip and be weighed, any alteration in their condition being noted. At any one time, six of the group would be fed wholesome, unadulterated food. The other six were fed food laced with commonly used additives such as borax and formaldehyde. Every two weeks, the two groups would be switched. While the position of poison squad member may sound like it would be a hard one to fill, volunteers were lining up to participate in the tests, even writing letters such as the following to Dr. Wiley:

Image courtesy of U.S. Food and Drug Administration Flickr page.

The experiments commenced in November of 1902 and by Christmas, spirits among the Squad members were low. According to a Washington Post article from December 26,

“The borax diet is beginning to show its effect on Dr. Wiley’s government-fed boarders at the Bureau of Chemistry, and last night when the official weights were taken just before the Christmas dinner the six guests who are taking the chemical course showed a slight decrease in avoirdupois . . . To have lost flesh on Christmas Day, when probably everybody else in Washington gained more or less from feasting, was regarded by the boarders themselves as doubly significant.”

A look at the “unprinted and unofficial menu” from the Christmas meal, also printed in the Post, sheds some light on what may have given the boarders pause in their Christmas feasting.

Image courtesy of The Washington Post: Dec 26, 1902; ProQuest Historical Newspapers: The Washington Post pg. 2. 

Much of the information reported by the press during this time came from the members of the squad themselves, until “Old Borax” as Wiley came to be known, issued a gag-order in order to preserve the sanctity of the scientific studies happening. Despite the order, public interest had been peaked and tongues and pens wagged around the country. As one Columbia University scholar put it, “Supreme County justices could be heard jesting about the Squad in public, and even minstrel shows got in on the act.” There were even poems and songs written about the trials.

If ever you should visit the Smithsonian Institute,
Look out that Professor Wiley doesn’t make you a recruit.
He’s got a lot of fellows there that tell him how they feel,
They take a batch of poison every time they eat a meal.
For breakfast they get cyanide of liver, coffin shaped,
For dinner, undertaker’s pie, all trimmed with crepe;
For supper, arsenic fritters, fried in appetizing shade,
And late at night they get a prussic acid lemonade.

They may get over it, but they’ll never look the same.
That kind of a bill of fare would drive most men insane.
Next week he’ll give them moth balls,
a LA Newburgh, or else plain.
They may get over it, but they’ll never look the same.

-Lew Dockstade, “They’ll Never Look the Same”

At the close of the Borax trials in 1903, Wiley began cultivating relationships with some journalists, perhaps in hopes of turning the reports from jovial, and sometimes untrue, conjectures to something more closely resembling the serious work being done.

Along with borax and formaldehyde, the effects of salicylic acid, saccharin, sodium benzoate and copper salts were all studied during the Hygienic Table Trials. The reports generated during the Hygienic Table Trials and the media coverage that followed set the stage for the passage of the Pure Food and Drug Act of 1906, the same year in which the trials were concluded. According to the FDA, the Pure Food and Drug Act of 1906, also known as The Wiley Act, serves the purpose of “preventing the manufacture, sale, or transportation of adulterated or misbranded or poisonous or deleterious foods, drugs, medicines, and liquors, and for regulating traffic therein.”

By requiring companies to clearly indicate what their products contained and setting standards for the labeling and packaging of food and drugs, the Act helped consumers make informed decisions about products that could affect their health. While controversies over additives and government regulations continue to this day, Dr. Harvey Wiley and his Poison Squad played a major role in making the food on our tables safe to eat.

Check out our historical marker and corresponding review report to learn
more about Wiley.                            marker picLearn about the history of public health in Indiana and Wiley’s contributions with our publication The Indiana Historian.

Jasper Sherman Bilby: To Map the Earth, Part II

Part one, covering Bilby’s early life and years working for the US Coast and Geodetic Survey, can be read here.

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A Bilby Steel Tower, 110 ft. high in the San Joaquin Valley, California. Photograph by Floyd Risvold. Courtesy of NOAA.
A Bilby Steel Tower, 110 ft. high in the San Joaquin Valley, California. Photograph by Floyd Risvold. Courtesy of NOAA.

Jasper Sherman Bilby’s time in the US Coast and Geodetic Survey (US C&GS) is best remembered for his invention, the Bilby Steel Tower. The tower revolutionized the Survey’s procedures, costs, and efficiency. As described by historian John Noble Wilford, the Bilby Tower was used for horizontal-control surveys (measuring latitude and longitude) and allowed surveyors to see over hills, trees, and other impediments to make their measurements more accurate.

In his manual, Bilby Steel Tower for Triangulation, Bilby detailed this problem of visibility:

In many regions it is not possible to select stations for a scheme of triangulation and have the stations intervisible from the ground, as trees, buildings, and other objects obstruct the line of vision between adjacent points. On geodetic surveys, covering wide expanses of territory, the curvature of the earth must also be taken into account. Towers are, therefore, necessary to elevate above intervening obstructions the observer and his instrument at one station and the signal lamp or object on which he makes his observations at the distant station.

According to US C&GS documents on his field assignments, Bilby began his designs on the tower as early as December 1926. He then took his early design plans to the Aeromotor Factory in Chicago to make a prototype. Once the prototype proved successful, twelve complete towers were manufactured by the same company and were first tested on assignment in Albert Lee, Minnesota with positive results.

A schematic drawing of the Bilby Steel Tower. Courtesy of NOAA.
A schematic drawing of the Bilby Steel Tower. Courtesy of NOAA.

In terms of design, the Bilby Tower was actually comprised of two independent towers. An inner tower carried the intricate instruments for survey calculations and the outer tower supported the surveyors who made the measurements. These towers never connected, so that the vibrations of either one did not disturb the survey calculations. In 1927, it was named the “Bilby Steel Tower” by Colonel Lester E. Jones, then director of the US C&GS.

In a 1927 commendation letter, Secretary of Commerce (and future President) Herbert Hoover commended Bilby’s invention for its cost and time efficiency and cited the surveyor’s service as essential to the United States government.

I have just learned, upon my return to Washington, of the excellent results which the Coast and Geodetic Survey is getting in its triangulation from the steel towers which you designed.

The accelerated progress of the work, accompanied by a reduction in its cost, is highly gratifying to me and justify the commendation which this letter conveys.

However, Hoover’s letter was not the only special commendations he received while in the US C&GS. He earned financial promotions through 1915- 1916 and in 1930, the position of “Chief Signalman” was created for him. Understanding Bilby’s work as essential to the US C&GS, President Hoover used an executive order in 1932 to waive the mandatory federal retirement age.

Letter from Secretary of Commerce Herbert Hoover to Jasper Sherman Bilby. Hoover commends Bilby for his invention of the Bilby Steel Tower. Courtesy of Surveyors Historical Society Collection.
Letter from Secretary of Commerce Herbert Hoover to Jasper Sherman Bilby. Hoover commends Bilby for his invention of the Bilby Steel Tower. Courtesy of Surveyors Historical Society Collection.

Within the first ten years of use, the Bilby Steel Tower saved the federal government $3,072,000, according to the itemized cost listing of both wooden and steel towers from 1927-1937 by the US C&GS field assignment reports. The 1928 US C&GS annual report explained how the implementation of Bilby Towers cut unit costs down by nearly half, much more than the projected 25-35% savings. It also increased their surveying progress to over “150 miles per month.”

Within a few years of its invention, the Bilby Steel Tower was used in nations such as France, Australia, Belgium, and Denmark. In particular, Major M. Hotine, Royal Engineer of the Ordinance Survey Office in Southampton, England, wrote of his satisfaction with the Bilby Steel Tower in the December 1938 issue of the US C&GS Field Engineers Bulletin:

We have just completed among other work this season, the primary observation for our new triangulation in the Eastern Counties of England. The country here is so flat and enclosed that we had to use Bilby Steel Towers at 34 of the main Stations [sic], to say nothing of several secondary stations surrounding such Steel Tower States, we thought it would be advisable to observe at the same time as the primary work. You may be interested to know that these admirable Steel Towers were entirely satisfactory; and that we were very deeply impressed with the conception, design, and construction of these Towers.

Along his invention, he wrote several government manuals on the theory and practice of geodetic surveying. His most famous and influential work was the manual on his invention, the Bilby Steel Tower. Bilby Steel Tower for Triangulation (1929) covered every aspect of his invention, from concept and construction to its usage and transport. It stayed in publication through two editions. Other manuals include Precise Traverse and Triangulation in Indiana (1922), Reconnaissance and Signal Building (1923), and Signal Building (1943).

Jasper Sherman (right) with his son and fellow surveyor Walter J. Bilby (left), circa 1926. Courtesy of Surveyor's Historical Society Collection.
Jasper Sherman (right) with his son and fellow surveyor Walter J. Bilby (left), circa 1926. Courtesy of Surveyor’s Historical Society Collection.

Bilby retired from the US C&GS in 1937. His final assignment was at a triangulation station in Hunt City, Jasper County, Illinois, completing his 53 year career exactly where it began on the 39th parallel. His 1927 manual for the Bilby Tower was revised for surveyors in 1940 and his work continued to influence the trade well into the 1980s. The last Bilby Tower was erected in 1984, in Connecticut. A complete survey tower, originally constructed on an island south of New Orleans, Louisiana called Couba in 1972, was restored and moved to the town park in Bilby’s hometown of Osgood, Ripley County, Indiana in 2014.

Bilby died on July 18, 1949 in Batesville, Indiana. He was buried in Washington Park Cemetery in Indianapolis. His long career and advancements in geodetic surveying technology, particularly on the 39th parallel, ensured the completion and accuracy of the National Spatial Reference System (NSRP), a first-order triangulation network of the United States.

The NSRP, according to the National Geodetic Survey, is a “consistent coordinate system that defines latitude, longitude, height, scale, gravity, and orientation throughout the United States.” This system’s continued use ensures accurate information for the United State’s Global Navigation Satellite System (GNSS), known domestically as the Global Positioning System (GPS).

The National Spatial Reference System. Bilby's work on the 39th Parallel laid the groundwork for the completion of this system. Today, it informs our GPS technologies. Courtesy of NOAA.
The National Spatial Reference System. Bilby’s work on the 39th Parallel laid the groundwork for the completion of this network of survey points. Today, it informs the US’s GPS technologies. Courtesy of NOAA.

Jasper Sherman Bilby’s innovation and inventiveness left an indelible mark on surveying in the United States and the world. His Bilby Steel Tower, and the knowledge it advanced, revolutionized mapmaking for generations.

In short, Bilby helped us map the earth.

Jasper Sherman Bilby: To Map the Earth, Part I

Surveyor Jasper Sherman Bilby on assignement in Minnesota, 1903. Courtesy of NOAA.
Surveyor Jasper Sherman Bilby on assignment in Minnesota, 1903. Courtesy of NOAA.

Indiana’s history is rich with inventors and pioneers. Philo T. Farnsworth, who lived in Fort Wayne for over a decade, invented the television and designed an early model of a fusion reactor. Elwood Haynes, Kokomo native and scientific prodigy, designed and assembled one of the first horseless carriages in the United States. Another Hoosier whose scientific mind for innovation proved indispensable to the nation was Jasper Sherman Bilby. His steel surveying tower radically reshaped the accuracy of map making and left a permanent mark on the way we view the United States.

Jasper Sherman Bilby (known as “J.S.”) was born in Rush County, Indiana on July 16, 1864 to Jasper N. Bilby and Margaret E. (Hazard) Bilby. Bilby’s early life has a rather tragic side; his father committed suicide in 1877 after being arrested for the sexual assault of one of his daughters. This hardship forced Bilby to leave school and to work on the family farm for a number of years in Fayette County to support his widowed mother.  After his marriage to Luella Cox in 1891, Bilby moved to Ripley County as early as 1893, according to Ripley County deed index books.

Plat book image of the Bilby Homestead, 1921. Coutesy of Ball State University.
Plat book image of the Bilby Homestead near Osgood, Ripley County, 1921. Courtesy of Ball State University.

Bilby joined the United States Coast & Geodetic Survey in September of 1884. Congress established this agency, originally called the United States Survey of the Coast, on February 10, 1807. Initially under the purview of the Treasury Department, the survey was reorganized under the US Department of Commerce in 1878 and renamed the United States Coast & Geodetic Survey (US C&GS). Today, it is under the umbrella of the National Oceanic and Atmospheric Administration (NOAA) and called the National Geodetic Survey (NGS).

Geodetic surveying is the geographical analysis of an area of land or bodies of water, accounting for the shape and curvature of the Earth. According to the NGS official website, the National Geodetic Survey, from its inception in 1807, has ensured accurate data for government and commercial purposes, such as “mapping and charting, navigation, flood risk determination, transportation, [and] land use and ecosystem management.” Additionally, the National Geodetic Survey’s work provides “authoritative spatial data, models, and tools [that] are vital for the protection and management of natural and manmade resources and support the economic prosperity and environmental health of the Nation.”

Bilby conducted his first survey work in Illinois along the 39th parallel. According to surveyor Raymond Stanton Patton, the 39th parallel was a line of latitude that spanned from Cape May, New Jersey to Point Area, California, and was the “first great piece of geodetic work accomplished by the Survey….”  His official position within the US C&GS for most of his career was that of “signalman.” A signalman uses flags or signal lights to indicate points within a geometric calculation between two survey points, usually between a point on shore and a point within a body of water. This practice ensures that those making the calculations on shore accurately represent the point in water.

A map of the 39th Parallel Arc. According to NOAA, it served as the "first great geodetic arc in the western hemisphere ." Courtesy of NOAA.
A map of the 39th parallel arc. According to NOAA, it served as the “first great geodetic arc in the western hemisphere .” Courtesy of NOAA.

Bilby traveled 511,400 miles during his 53 years in the US C&GS, from Illinois to California, according to his career field reports. Newspapers throughout the country recorded his cross-country traveling for the US C&GS, notably his work in states like Louisiana and Texas. Department of Commerce publications also chronicle his time in Wisconsin, Illinois, and Georgia, detailing his work in specific counties. In 1920, Bilby and his team surveyed the majority of Wisconsin and Illinois, providing exact coordinates for most regions adjacent to water. In these surveys, Bilby used the Traverse method of surveying, which is less accurate but quicker to calculate than Triangulation. (The traverse method uses pointed lines for measurements while triangulation uses angular measurements based on triangles.) Bilby and his team completed surveys within the Rio Grande valley in 1917, specifically from Harlington to Dryden. His efforts in the eastern area of the Rio Grande ensured more accurate measurements, adding to the US C&GS’s triangulation of the American west.

A 1926 article published in Popular Mechanics provides some of Bilby’s own words about his job, especially its difficulty before his invention and some personal stories. One of Bilby’s tasks within the US C&GS was reconnaissance, which is the practice of marking triangulation stations before the main survey party arrives. This cuts down on their work and ensures accuracy in their measurements. He told the magazine about the harsh weather and loneliness that often accompanies a surveyor’s life:

Especially…when the wind is howling through the trees, and the rain is pattering down on the tent, and you know there’s little change of anyone dropping by.

An artistic depiction of a wooden survey tower, in the July 1926 issue of Popular Mechanics. Courtesy of Google Books.
An artistic depiction of a wooden survey tower, in the July 1926 issue of Popular Mechanics. Courtesy of Google Books.

Nevertheless, he enjoyed his work and appreciated how radio was improving the public’s knowledge of the work of the US C&GS. Bilby notes:

Radio has made the coast and geodetic survey known more than it used to be. A few years ago people were always asking what the name meant, but now I often find they know us pretty well, from talks they’ve heard on the air. One lecture on mountain building which was broadcast from Washington was the means of getting me a fine dinner. I had stopped at a farmhouse to make inquiries and the farmer noticed my ‘geodetic’ tag. He mentioned this talk he’d heard, and when I said it must have been given by the chief of my division, Major Bowie, he became so interested that he made me stay to dinner and answer his questions. However, that wasn’t unwelcome after eating my own cooking for so long.

This story was published a year before the first usage of the Bilby Steel Tower, when wooden towers were still standard equipment.

His early years as a geodetic surveyor, particularly his negative experiences with wooden survey towers, would influence his greatest contribution to the field: the invention of the Bilby Steel Tower.

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Bilby’s influential invention, the Bilby Steel Tower, will be covered in Part II.