John Jeffries (5 February 1744 – 16 September 1819) was an American physician, scientist, and military surgeon with the

British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurk ...

Nova Scotia Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland". Most of the population are native Eng ...

and New York during the

American Revolution The American Revolution was an ideological and political revolution that occurred in British America between 1765 and 1791. The Americans in the Thirteen Colonies formed independent states that defeated the British in the American Revoluti ...

. He is best known for accompanying French inventor

Jean-Pierre Blanchard Jean-Pierre rançoisBlanchard (4 July 1753 – 7 March 1809) was a French inventor, best known as a pioneer of gas balloon flight, who distinguished himself in the conquest of the air in a balloon, in particular the first crossing of the Englis ...

on his 1785

balloon A balloon is a flexible bag that can be inflated with a gas, such as helium, hydrogen, nitrous oxide, oxygen, and air. For special tasks, balloons can be filled with smoke, liquid water, granular media (e.g. sand, flour or rice), or light so ...

flight across the

English Channel The English Channel, "The Sleeve"; nrf, la Maunche, "The Sleeve" (Cotentinais) or ( Jèrriais), (Guernésiais), "The Channel"; br, Mor Breizh, "Sea of Brittany"; cy, Môr Udd, "Lord's Sea"; kw, Mor Bretannek, "British Sea"; nl, Het Kana ...

Biography

Born in Boston, Jeffries graduated from

Harvard College Harvard College is the undergraduate college of Harvard University, an Ivy League research university in Cambridge, Massachusetts. Founded in 1636, Harvard College is the original school of Harvard University, the oldest institution of higher lea ...

lass of 1763and obtained his medical degree at the

University of Aberdeen , mottoeng = The fear of the Lord is the beginning of wisdom , established = , type = Public research universityAncient university , endowment = £58.4 million (2021) , budget ...

. Dr. Jeffries played a role in the trial for the

Boston Massacre The Boston Massacre (known in Great Britain as the Incident on King Street) was a confrontation in Boston on March 5, 1770, in which a group of nine British soldiers shot five people out of a crowd of three or four hundred who were harassing t ...

as a witness for the defense. He was the surgeon for Patrick Carr, who was one of the Americans shot during that incident. Between 1771 through 1774 Jeffries was a surgeon on board a squadron of British ships in

Boston Harbor Boston Harbor is a natural harbor and estuary of Massachusetts Bay, and is located adjacent to the city of Boston, Massachusetts. It is home to the Port of Boston, a major shipping facility in the northeastern United States. History ...

and helped the wounded British soldiers on 17 June 1775 at the Battle of Bunker Hill. Jeffries is credited with being among America's first weather observers. He began taking daily weather measurements in 1774 in Boston, as well as taking weather observations in a balloon over London in 1784. National Weatherperson's Day is celebrated in his honor on 5 February, his birthday. The Archives and Special Collections at Amherst College holds a collection of his papers, including a letter he dropped from the balloon during his historic flight, considered the oldest piece of airmail in existence.Jeffries Air-Mail Letter Collection
He fled to

Halifax, Nova Scotia Halifax is the capital and largest municipality of the Provinces and territories of Canada, Canadian province of Nova Scotia, and the largest municipality in Atlantic Canada. As of the 2021 Census, the municipal population was 439,819, with 348 ...

in 1776 and later to England 1779, and was employed by the Crown during this time. In 1785, Jeffries and

crossed the

in a balloon, becoming the first human beings to cross the Channel by air. Jeffries lived in

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

from 1779 to 1790. Despite being named in the Massachusetts Banishment Act, he returned to private practice in Boston, staying there until his death in 1819. His son John Jeffries II (1796–1876) was an

ophthalmic surgeon Ophthalmology ( ) is a surgical subspecialty within medicine that deals with the diagnosis and treatment of eye disorders. An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. Following a medic ...

and co-founded the Massachusetts Charitable Eye and Ear Infirmary.

Notes

References

External links

*
Jeffries Air-Mail Letter Collection, Amherst College Archives and Special Collections

John Jeffries Papers
at

Houghton Library Houghton Library, on the south side of Harvard Yard adjacent to Widener Library, is Harvard University's primary repository for rare books and manuscripts. It is part of the Harvard College Library, the library system of Harvard's Faculty of ...

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of high ...

{{DEFAULTSORT:Jeffries, John British Army regimental surgeons British Army personnel of the American Revolutionary War 18th-century American physicians American balloonists American meteorologists American Loyalists from Massachusetts Alumni of the University of Aberdeen Harvard College alumni 1744 births 1819 deaths Burials at Granary Burying Ground 18th-century British medical doctors People from Boston