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PRINTED FOR J. JOHNSON, ST. PAUL'S CHURCH-YARD;
AND LONGMAN, HURST, REES AND ORME,

PATERNOSTER-ROW.

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Pagt.

On the Bristol waters, and the tide in rivers - . . . 95

On the same subject - . - - - - - . 109

Sall-water rendered fresh by distillation.—Method of relieving

thirst by sea-water - - 'n'.'.- . - - - 105

Tendency of rivers to the sea.-Effect of the sun's rays on cloth of

different colours - - - - - - - - 1 0

On the vis ineste of matter - - - - - - - 110

On the different strata of the earth - - - - . . 116

On the theory of the earth - - - - - - - - 117

New and curious theory of light and heat . . . . 122

Queries and conjectures relating to magnetism and the theory of the

earth - - - - * - - - - - - 125

On the nature of sea coal - - - - - - - 125

Effect of vegetation vi: noxious air - - - .

129

On the flammability of the surface of certain rivers in America - 136)

On the different quantities of rain which fall at different heights

over the same ground - - - - - - - - 133

Slowly sensible bygrometer proposed, for certain purposes - 135

Curious instance of the effect of oil on water - - - - 112

Letters on the stilling of waves by means of oil - . . 144

Extract of a letter from Mr. Tengugel to Count Bentinck, dated at

Batavia, the 5th of January, 1770 -

. - - . 154

On the difference of navigation in shoal and deep water . . . 158

Sundry maritime observations - - - . . . . 162

Remarks upon the navigation from Newfoundland to New-York, in

order to avoid the Gulph Stream on one hand, and on the other

the shoals that lie to the southward of Nantucket and of St. .

George's Banks - - - - - - .. . -- 197

Observations of the warmth of the sea water, &c. by Fahrenheit's

Thermometer, in erossing the Griph Stican; with other remarks

made on board the Pensylvania packet, Capt. Osborne, bound

from London to Philadelpila, ia April and May, 1775 - - 199

Observations of the warmth of the sea-water, &c. by Fahrenheit's .

thermometer; Wiik otser renniks nade on board the Reprisal,
Capt. Wycks, bourd from Philadelphia to France, in October

and November, 1776 . . . . . . - - 200

A journal of a voyage from the Channel between France and Eng.

land towards America - - - -., -, - - 202

On the art of swimming :,, . . . . . 206

On the same subject, in answer to s ́ me enquiries of M. Dubourg - 2:0

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