Had the whole day to myself; as I did not attend the afternoon recitation. Spent my Time in reading Ferguson, and Saunderson.1
1. Nicholas Saunderson, The Elements of Algebra, In Ten Books..., 2 vols., Cambridge, England, 1740 (Harvard, Catalogus Bibliothecae, 1790, p. 1). JQA may have used his personal copy of Saunderson, recorded among his books in 1784, which is no longer in his or the other Adams' libraries ([Christian Lotter], Inventory of JQA's books, 6 Nov. 1784, Adams Papers).
Cite web page as: Founding Families: Digital Editions of the Papers of the Winthrops and the Adamses, ed.C. James Taylor. Boston: Massachusetts Historical Society, 2007.