BOSTON:
TAPPAN & WHITTEMOR E.
A. WHITTEMORE & CO., MILWAUKIE, W 15.

WHITTEMORE & SAXTON, CHILLICOTHE, Ohio.

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'e Office of the District Court of the District of Massachusetts.

CONTENTS

OF

VOLUME SIXT II.

LETTERS AND PAPERS ON PHILOSOPHICAL SUBJECTS.

Page

1

.

14

18

25

26

28

.

Causes of Earthquakes. 15 December, 1737

A Proposal for promoting Useful Knowledge among the

British Plantations in America. 14 May, 1743 ·

CADWALLADER COLDEN TO B. FRANKLIN. Oc:ober, 1743.

A New Method of Printing

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.

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.

On Perspiration and Absorption. — Motion of the

Blood in the Heart

To CADWALLADER COLDEN. 28 November, 1745.

On the Circulation of the Blood. - Proposal for

publishing a Philosopbical Miscellany

29

32

34

-

65

70