The existence of a revolving serving door between the Dining Room and the north passage is confirmed in Cornelia Jefferson Randolph's floor plan of Monticello, where it is called a "turning buffet." Robert Mills' floor plan, conjecturally dated 1803, includes the serving door. Visitors to the President's House in Washington also reported Jefferson's use of such a device there.
A typical day for Jefferson started early, because, in his own words, "Whether I retire to bed early or late, I rise with the sun." He told of a fifty-year period in which the sun had never caught him in bed; he rose as soon as he could read the hands of the clock kept directly opposite his bed.
James Ferguson, 1710-1776, was a sort of “Bill Nye the Science Guy” of the middle to late 1700s. A fellow of the Royal Society, he had done important work in observing and understanding the moon’s orbit, but his true calling turned out to be explaining science to the general public. Some of his works still make good reading today. He strove for simple, elegant solutions and didn’t waste words. Perhaps he put it best in “Select Mechanical Exercises”:
“The simpler that any machine is, the better it will be allowed to be, by every man of science.”