On fly-leaf just before title page, additional hand-written computations of interest have been added, date is August 1741. On page 123 contains hand-written notes and computations in the same hand. Last page, un-numbered, contains a fold-out diagram of additional tables, added March 5, 1736. All three hand-written sections look to be from the same hand.
Gwen Bell artifact and book collection
Algorithms, tables, and history of calculation books
The Gwen Bell Early Book Collection of Algorithms, Tables, and History of Calculations