The works of Sir Alexander Fraser Tytler, the Lord Woodhouselee, are not in publication, as the last time they were actively used was in the late 18th century. The work in question is most likely one of volumes of his two volume set, "The Elements of General History" used as coursework for his classes in universal history at the University of Edinburgh from 1780 until 1811, during which time he revised them extensively.
They were also used as textbooks in England and some believe in America as well. I believe that Yale currently holds a copy of one of the folios along with some letters between Alexander Fraser and his father, William; I have not yet verified this.
I am currently in Edinburgh. The University library archives have copies of many of his works, including the Memoirs of the Life and Writings of Henry Home, lord Kames, an early mentor to the young Alexander Fraser Tytler, and the Elements, as well as "Ireland profiting by Example, or the Question considered, Whether Scotland has gained or lost by the Union."
At any rate, I have been unable to find the quote in question.
Cheers!
- Nathan Dornbrook