E302 Entered according to the act of Congress, in the year one thousand eight hundred and thirty-eight, by HILLIARD, GRAY, AND Co.. in the Clerk's Office of the District Court of the District of Massachusetts. L Gift of James Wardison Sufler BOSTON: PRESS OF GEORGE C. HAND. CORNHILL. CONTENTS OF VOLUME SIXTH. Causes of Earthquakes. 15 December, 1737 A Proposal for promoting Useful Knowledge among the TO CADWALLADER COLDEN. 4 November, 1743 CADWALLADER COLDEN TO W. STRAHAN. Nov. 1743. Remarks on a New Method of Printing. TO CADWALLADER COLDEN. 5 April, 1744. Organization of a Philosophical Society WILLIAM STRAHAN TO C. COLDEN. 9 May, 1744. Page 14 Objections to the proposed New Method of Printing CADWALLADER COLDEN TO B. FRANKLIN. Dec. 1744. Concerning Thoughts on different Species of Mat- ter.Suggestion for publishing Philosophical Pa- pers An Account of the new-invented Pennsylvanian Fire-places To CADWALLADER COLDEN. 15 August, 1745. 70 |