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the Method of Erecting Conductors of Lightning 424
To EDWARD NAIRNE. 13 November, 1780.
Proposing a slowly sensible Hygrometer for cer-
On the Long Retention of Infection in Dead
FELIX VICQ D'AZYR TO B. FRANKLIN. 23 Aug. 1781
TO JOHN INGENHOUSz. 2 October, 1781.
An Account of Toads found enclosed in Solid Stone
TO THE ABBÉ SOULAVIE. 22 September, 1782.
TO DAVID RITTENHOUSE. 15 December, 1783.
EDWARD NAIRNE TO B. FRANKLIN. 2 Dec. 1783.
A Hygrometer on a New Construction. M. De
TO JOHN INGENHOUSZ. 16 January, 1784.
On Balloons, and their probable Importance
TO BENJAMIN VAUGHAN. 29 April, 1784.
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
To JOHN INGENHOUSZ. 28 August, 1785.
On the Causes and Cure of Smoky Chimneys
Description of a new Stove for burning Pitcoal, and con-
Description of an Instrument for taking down Books from
TO BENJAMIN VAUGHAN. 31 July, 1786.
On Thermometers. 13 September, 1786
WILLIAM HERSCHEL TO B. FRANKLIN. 18 Feb. 1787.
With a Catalogue of new Nebula and Clusters
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 .
Description of the Process to be observed in making
large Sheets of Paper in the Chinese Manner,