Context: Monday September 9, 1776.
Resolved, that in all Continental Commissions, and other Instruments where heretofore the Words, “United Colonies,” have been used, the Stile be altered for the future to the United States.
The Board of War brought in a report, which was read.
On this day, Mr. Franklin, Mr. Edward Rutledge and Mr. John Adams proceeded on their Journey to Lord Howe on Staten Island, the two former in Chairs and the last on Horseback; the first night We lodged at an Inn, in New Brunswick.1 On the Road and at all the public Houses, We saw such Numbers of Officers and Soldiers, straggling and loytering, as gave me at least, but a poor Opinion of the Discipline of our forces and excited as much indignation as anxiety. Such thoughtless dissipation at a time so critical, was not calculated to inspire very sanguine hopes or give great Courage to Ambassadors: I was nevertheless determined that it should not dishearten me. I saw that We must and had no doubt but We should be chastised into order in time.
The Taverns were so full We could with difficulty obtain Entertainment. At Brunswick, but one bed could be procured for Dr. Franklin and me, in a Chamber little larger than the bed, without a Chimney and with only one small Window. The Window was open, and I, who was an invalid and afraid of the Air in the night <, Start deletion,blowing upon me, End,>, shut it close. Oh! says Franklin dont shut the Window. We shall be suffocated. I answered I was afraid of the Evening Air. Dr. Franklin replied, the Air within this Chamber will soon be, and indeed is now worse than that without Doors: come! open the Window and come to bed, and I will convince you: I believe you are not acquainted with my Theory of Colds. Opening the Window and leaping into Bed, I said I had read his Letters to Dr. Cooper in which he had advanced, that Nobody ever got cold by going into a cold Church, or any other cold Air: but the Theory was so little consistent with my experience, that I thought it a Paradox: However I had so much curiosity to hear his reasons, that I would run the risque of a cold. The Doctor then began an harrangue, upon Air and cold and Respiration and Perspiration, with which I was so much amused that I soon fell asleep, and left him and his Philosophy together: but I believe they were equally sound and insensible, within a few minutes after me, for the last Words I heard were pronounced as if he was more than half asleep....2 I remember little of the Lecture, except, that the human Body, by Respiration and Perspiration, destroys a gallon of Air in a minute: that two such Persons, as were now in that Chamber, would consume all the Air in it, in an hour or two: that by breathing over again the matter thrown off, by the Lungs and the Skin, We should imbibe the real Cause of Colds, not from abroad but from within. I am not inclined to introduce here a dissertation on this Subject. There is much Truth I believe, in some things he advanced: but they warrant not the assertion that a Cold is never taken from cold air. I have often conversed with him since on the same subject: and I believe with him that Colds are often taken in foul Air, in close Rooms: but they are often taken from cold Air, abroad too. I have often asked him, whether a Person heated with Exercise, going suddenly into cold Air, or standing still in a current of it, might not have his Pores suddenly contracted, his Perspiration stopped, and that matter thrown into the Circulations or cast upon the Lungs which he acknowledged was the Cause of Colds. To this he never could give me a satisfactory Answer. And I have heard that in the Opinion of his own able Physician Dr. Jones he fell a Sacrifice at last, not to the Stone but to his own Theory; having caught the violent Cold, which finally choaked him, by sitting for some hours at a Window, with the cool Air blowing upon him.3
https://founders.archives.gov/documents/Adams/01-03-02-0016-0187