“Ever afterwards, he was known as Dr. Bush”

David Bushnell’s pioneering submarine didn’t do much damage to the Royal Navy in 1776, but the next year he came back with another invention.

As Christian McBurney relates in this article, in August 1777 Bushnell oversaw an attack on H.M.S. Cerberus with explosive mines. They didn’t hit the warship, but they did destroy a schooner and kill three British sailors.

In August 1779 Bushnell became an officer in a new Continental corps of “Sappers and Miners.” Two years later, Capt. Bushnell led his specialized unit in the siege of Yorktown.

In 1787 Bushnell moved from Connecticut to France. There’s not much evidence of what he did there. Some people speculate that he crossed paths with Robert Fulton, who would design his own submarine as well as a steamboat. However, it looks to me like Fulton didn’t go to France until 1797, and by then Bushnell was back in the U.S. of A.

Not in Connecticut, however. Instead, Bushnell settled in Georgia “in 1795 or 96,” according to the Rev. George White’s Historical Collections of Georgia (1854). At first he was “a teacher in the County of Columbia.”

He was eminently distinguished for his classical and scientific learning. His chief enjoyments were found in the instruction of his classes, and an occasional visit to a few men of congenial spirit. . . .

His old fellow soldier, the Hon. Abraham Baldwin, received him into his family, under whose auspices he had no difficulty in placing himself at the head of one of the most respectable schools in Georgia. In this vocation he spent several years, and under his guidance and tuition many of our most useful citizens received valuable instructions in learning and morals.

Bushnell and Baldwin (1754–1807, shown above) had met at Yale in the early 1770s. Baldwin was barely a “fellow soldier,” though; he had been a chaplain for Connecticut troops but spent most of the war preparing for the Congregationalist pulpit. Then in 1783 he suddenly changed direction, became a lawyer, and moved to Georgia.

Within a few years Baldwin was representing the state in the Confederation Congress, the Constitutional Convention, and the first federal House of Representatives. He also served as president of the nascent University of Georgia while it was organized.

As for the “family” that Baldwin welcomed Bushnell into, both men were lifelong bachelors. It looks like Bushnell shared Baldwin’s house for several years before the younger man died suddenly in 1807 while serving in the U.S. Senate.

The Historical Collections of Georgia profile of Bushnell continued:

Late in life, he settled in Warrenton as a practitioner of physic. Then, and ever afterwards, he was known as Dr. Bush. For reasons which have never been disclosed, he had some time before he settled in Georgia, dropped the last syllable of his name; and until the publication of his last will and testament, no person in this country, except his old friend Baldwin, was apprised of the fact that his family name was Bushnell.

The name of “David Bush, Phicion [physician]” does appear on Georgia tax records for 1805, owning “Stock in trade & House adjoining Warrenton.” Three years later, he bought more real estate. In 1810 David Bush was one of the commissioners to incorporate the town of Warrenton, named for Dr. Joseph Warren.

At least one other local did know Dr. Bush’s real name, however. In 1814 George Hargraves, a notary in Warren County, wrote a letter to Thomas Jefferson enclosing a “description and drawing of a Torpedo” that might be useful to the U.S. in the current war. He said the inventor was “a man of science” mentioned in David Ramsay’s history of the Revolution, hinting: “you will readily conjecture who the Inventor is.” Bushnell must therefore have entrusted Hargraves with his secret, just as he trusted the man to be an executor of his will.

Dr. Bush probably died in early 1826. Hargraves started advertising for his debtors to come pay what they owed the estate on 15 March of that year.

On 9 August an item appeared in the Middlesex Gazette of Middletown, Connecticut, reminding readers about Bushnell and his “destructive machine.” It reported:

About 30 years since, Mr. Bushnell left his native town, and from that period no information was received respecting him, until very recently, when a gentleman arrived in Saybrook from Georgia, with the intelligence that Mr. Bushnell had lately died in that State, leaving about 9,000 dollars in cash; accumulated principally by the practice of Medicine; which Mr. B. had given to him, he being a particular friend, provided that if he should, upon inquiry, discover that Mr. B’s connexions in Saybrook, were from their character, worthy of the property, such connexions were to receive the whole amount.

The gentleman with whom it was entrusted, ascertained, on reaching Saybrook, that Mr. Bushnell’s nearest relatives were four nephews, and those all men of worth and integrity, and faithfully divided the property among them.

Those were the sons of David Bushnell’s brother Ezra. In addition to the money, this article said, he bequeathed them an “unfinished a piece of mechanism, upon which he had bestowed much pains”—but what it was, the newspaper didn’t, or couldn’t, say.

The Middlesex Gazette stated: “Mr. Bushnell…bore a very high reputation as a mechanical genius, and was esteemed an exemplary member of society, although possessing many eccentricities of character.” Again, the paper didn’t say what those eccentricities were.

“The first essays with the submarine Vessel”

On 2 Feb 1776, David Bushnell journeyed from his workshop in Saybrook, Connecticut, to Lebanon to meet with Gov. Jonathan Trumbull and his Council, telling those gentlemen about his “machine contrived to blow ships.”

After Bushnell left the room, the officials voted to keep the conversation secret and to send Matthew Griswold, the deputy governor, to Bushnell with £60 to encourage his work.

Back home, Bushnell resumed work on his machine—the first submarine to be deployed in warfare.

Years later, Bushnell described his invention to a curious Thomas Jefferson:

The external shape of the Submarine Vessel bore some resemblance to two upper tortoise shells of equal size, joined together: the place of entrance into the Vessel being represented by the opening, made by the swell of the shells, at the head of the animal. The inside was capable of containing the Operator, and air, sufficient to supply him, thirty minutes, without receiving fresh air.

At the bottom, opposite to the entrance, was fixed a quantity of lead for ballast. At one edge, which was directly before the operator, who sat upright, was an oar, for rowing forward or backward. At the other edge, was a rudder for steering. An aperture, at the bottom, with its valve, was designed to admit water for the purpose of descending; & two brass forcing pumps served to eject the water within, when necessary for ascending. At the top, there was likewise an oar, for ascending or descending, or continuing at any particular depth. A Watergage or Barometer, determined the depth of descent, a compass directed the course, & a ventilator within, supplied the Vessel with fresh air, when on the surface. . . .

The skilful operator could swim so low on the surface of the water, as to approach very near a Ship, in the Night, without fear of being discovered, and might if he chose, approach the stem or stern, above water, with very little danger. He could sink very quick, keep at any depth he pleased, and row a great distance, in any direction he desired, without coming to the surface; & when he rose to the surface, he would soon obtain a fresh supply of air, when, if necessary, he might descend again and pursue his course. . . .

In the first essays with the submarine Vessel, I took care to prove its strength to sustain the great pressures of the incumbent water when sunk deep, before I trusted any person to descend much below the surface: and I never suffered any person to go under water without having a strong piece of rigging made fast to it, until I found him well acquainted with the operations necessary for his safety. After that I made him descend and continue at particular depths, without rising or sinking, row by the compass, approach a Vessel, go under her, and fix the Woodscrew…into her Bottom, &c. until I thought him sufficiently expert to put my design into execution.

I found agreeably to my expectation, that it required many trials to make a person of common ingenuity, a skilful operator. The first I employed was very ingenious and made himself master of the business, but was taken sick in the campaign of 1776 at N.York, before he had an opportunity to make use of his skill, and never recovered his health sufficiently afterwards.

David Bushnell’s first operator was his own brother Ezra. They had inherited a farm together, and Ezra had bought out David’s interest to give him the capital to attend Yale College—an unusual course for a man in his late twenties.

Jefferson had Bushnell’s detailed description of his invention published by the American Philosophical Society in 1799. Those documents serve as the source for all attempts to depict and recreate the submarine, such as the 1916 illustration above.

TOMORROW: Into action.