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the Method of Erecting Conductors of Lightning
TO EDWARD NAIRNE. 13 November, 1780.
Proposing a slowly sensible Hygrometer for cer-
TO THE MARQUIS TURGOT. 1 May, 1781.
On a new-invented Stove
TO FELIX VICQ D'AZYR. 20 July, 1781.
On the Long Retention of Infection in Dead
Bodies after Sepulture
FELIX VICQ D'AZYR TO B. FRANKLIN. 23 Aug. 1781
To JOHN INGEN HOUSZ. 2 October, 1781.
An Account of Toads found enclosed in Solid Stone
TO THE ABBÉ SOULAVIE. 22 September, 1782.
On the Theory of the Earth.
JOHN INGENHOUSZ TO B. FRANKLIN. 29 Nov. 1782.
EDWARD NAIRNE TO B. FRANKLIN. 2 Dec. 1783.
A Hygrometer on a New Construction. M. De
TO DAVID RITTENHOUSE. 15 December, 1783.
Fire supposed to exist in the State of a Subtile
Meteorological Imaginations and Conjectures. May, 1784
Loose Thoughts on a Universal Fluid. 25 June, 1784
TO JOHN INGENHOUSZ. 29 April, 1785.
Clock with three Wheels. - Gravitation of Bodies 461
TO DAVID LE ROY. August, 1785.
Improvements in Navigation. Observations on
the Sails and Cables of Vessels; the Models for
their Construction; Means of preserving them
from Accidents at Sea; Methods of giving Mo-
tion to Boats. · Gulf Stream. Precautions to
those who are about to take a Voyage at Sea.
General Reflections on Navigation
Appendix to the above Letter. Remarks upon the Nav-
igation from Newfoundland to New York
To JOHN INGENHOUSZ. 28 August, 1785.
On the Causes and Cure of Smoky Chimneys
Description of a new Stove for burning Pitcoal, and con-
suming all its Smoke .
Description of an Instrument for taking down Books from
high Shelves. January, 1786
To BENJAMIN VAUGHAN. 31 July, 1786.
On the Effects of Lead upon the Human Con-
On Thermometers. 13 September, 1786
WILLIAM HERSCHEL TO B. FRANKLIN. 18 Feb. 1787.
With a Catalogue of new Nebula and Clusters
To M. LE ROY. 18 April, 1787.
On Balloons. Pigeons killed by Lightning
NEVIL MASKELYNE TO B. FRANKLIN. 3 March, 1788.
Concerning Churchman's Theory of the Varia-
ation of the Magnetic Needle
TO JAMES BOWDOIN. 31 May, 1788.
Queries and Conjectures relating to Magnetism
and the Theory of the Earth.
Description of the Process to be observed in making
large Sheets of Paper in the Chinese Manner,
with one smooth Surface :
LETTERS AND PAPERS