air on the barometer, and the benefits derived from the study of insects

92 On the Bristol waters, and the tide in rivers 95 On the same subject 102 Salt-water rendered fresh by distillation.—Method of relieving thirst by sea-water 103 Tendency of rivers to the sea.—Effect of the sun's rays on cloth of different colours 105 On the vis inertiæ 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 on noxious air 129 On the inflammability of the surface of certain rivers in America 130 On the different quantities of rain which fall at different heights over the same ground 133 Slowly sensible hygrometer proposed, for certain purposes 135 Curious instance of the effect of oil on water 142 Letters on the stilling of waves by means of oil 144 Extract of a letter from Mr. Tengnagel 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 crossing the Gulph Stream; with other remarks made on board the Pensylvania packet, Capt. Osborne, bound from London to Philadelphia, in April and May, 1775 199 Observations of the warmth of the sea-water, &c. by Fahrenheit's thermometer; with other remarks made on board the Reprisal, Capt. Wycks, bound from Philadelphia to France, in October and November, 1776 200 A journal of a voyage from the Channel between France and England towards America 202 On the art of swimming 206 On the same subject, in answer to some enquiries of M. Dubourg 210 On the free use of air 213 On the causes of colds 214 Dr. Stark, and Dr. Letsom