Treatise on mathematics and astronomy: written about the year 1680, in Boston

Bound volume containing a late 17th century handwritten mathematical and astronomical text in one hand. The text is separated into mathematical and astronomical sections with rules, instructions for performing calculations, tables, and drawings. The subjects include arithmetic, geometry, astronomy, and trigonometry, and segments have titles such as "Subtraction," "A decimal table of English coince," "Logarithes & their use," and "To find the true place of the sun." The text is undated and unattributed but references Briggs, Oughtred, Ramus, and Apollonius. Certain tables are calculated from latitudinal and longitudinal numbers associated with Boston, and many of the examples use dates in the 1670s and 1680. The manuscript pages are mounted onto unruled pages, and some of the manuscript pages are fragments.

A discourse on natural religion: delivered in the chapel of the University in Cambridge, September 3r, 1795, at the lecture founded by the Honourable Paul Dudley, Esqr

The hand-sewn notebook contains a manuscript draft of the Dudleian lecture delivered by Thomas Barnard on September 3, 1795 at Harvard College. The sermon begins with the Biblical text Acts 14-57. The copy includes a small number of edits and struck-out words. The covers are no longer with the item.