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CONTENTS
OF
VOLUME SIXTH.
LETTERS AND PAPERS ON PHILOSOPHICAL SUBJECTS.
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. October, 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
Page
1
.
14
18
25
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
28
29
32
34
65
TO CADWALLADER COLDEN. 28 November, 1745.
On the Circulation of the Blood.- Proposal for
publishing a Philosophical Miscellany
70
X - 1 8
r alig eastward.
dacea CocoEN 73 B. FRAVELIN.
Auver to the forego Lecter respecting the
Sing & Sales across the Atlantic
Ts has born. 15 July, 1747.
-
LA - Newest Stree. Origin of
Sprog & Motrans.- Petrifed Shells in the
Appalachian Mountains.- Observations on a Tariff
Lan
Experiments in the Culture of Grass in Meadows
TO THOMAS HOPKINSON. 1747.
On the Via Izerte of Matter
16 CADWALLADER COLDEN. 6 August, 1717.
Baxter's Book on the Vis Inertia of Matter.-
Man facture of Electrical Apparatus. — Colden's
Philosophical Treatise
A Conjecture as to the Cause of the Heat of the Blood
in Health, and of the Cold and Hot Fits of some
Fevers
TO PETER COLLINSON.
Magical Square of Squares
Magical Circle
TO JARED ELIOr. 13 February, 1749–50.
--
Northeast Storms begin at the South. Account
of a Copper Mine.- Subscriptions for an Acad-
emy in Philadelphia
To CADWALLADER COLDEN. 28 June, 1750.
Electrical Papers and Experiments. - James Logan
Inquiries respecting the Mode of Planting Hedges
TO JARED ELIOT. 25 October, 1750.
TO JARED ELIOT. 10 December, 1751.
Remarks on Husbandry
100
. 104
. 105
109
111
112