Professor Sewall's Lectures on the Hebrew and Oriental Languages, Vol. 2d, 1767-1780

This volume contains lectures delivered by Sewall to Harvard students. The first lecture in the volume, Lecture XV, was read on March 9, 1767; October 8, 1770, August 22, 1774, and December 13, 1778. The last lecture in the volume, Lecture XXVII, was read on June 13, 1768; May 4, 1772; July 29, 1776; and June 5, 1780.

Professor Sewall's lectures on the Hebrew and Oriental languages, Vol. 3d, 1768-1780

This volume contains lectures delivered by Sewall to Harvard students. The volume begins with a continuation of Lecture XIV from Volume 2. The first complete lecture in the volume, Lecture XXXIV, was delivered August 29, 1768; May 18, 1772; September 23, 1776; and June 19 1780. The last lecture in the volume, Lecture LV was delivered February 11, 1771, November 7, 1774, and May 31, 1779.

Professor Sewall's lectures on the Hebrew and Oriental languages, Vol. 4th, 1771-1797

The first lecture in this volume, Lecture LVI, was delivered on March 4, 1771; November 28, 1774; and June 14, 1779. The last lecture in the volume, Lecture LXXII was delivered in December 19, 1774; August 17, 1778; and September 16, 1782. The volume also contains a table of the variation of the magnetic needle observed at Cambridge from November 1796 to August 1797.

Mathematical notebook, and commonplace book, circa 1689-1769

Manuscript notebook, possibly kept by Harvard students, containing 17th century English transcriptions of arithmetic and geometry texts, one of which is dated 1689-1690; 18th century transcriptions from John Ward’s “The Young Mathematician’s Guide”; and notes on physics lectures delivered by John Winthrop, the Hollis Professor of Mathematics and Natural Philosophy at Harvard from 1738 to 1779. The notebook also contains 18th century reading notes on Henry VIII, Tudor succession, and English history from Daniel Neal’s “The History of the Puritans” and David Hume’s “History of England,” and notes on Ancient history, taken mainly from Charles Rollin’s “The Ancient History of the Egyptians, Carthaginians, Assyrians, Babylonians, Medes and Persians, Macedonians and Grecians.” Additionally included are an excerpt from Plutarch’s “Lives” and transcriptions of three articles from “The Gentleman’s Magazine, and Historical Chronicle,” published in 1769: “A Critique on the Works of Ovid”; a book review of “A New Voyage to the West-Indies”; and “Genuine Anecdotes of Celebrated Writers, &.” The flyleaf contains the inscription “Semper boni aliquid operis facito ut diabolus te semper inveniat occupatum,” a variation on a quote of Saint Jerome that translates approximately as “Always good to do some work so that the devil may always find you occupied.” In the seventeenth and eighteenth centuries, Harvard College undergraduates often copied academic texts and lecture notes into personal notebooks in place of printed textbooks. Winthrop used Ward’s textbook in his class, while the books of Hume, Neal, and Rollin were used in history courses taught at Harvard in the 18th century.