The way to wealth 13 20 30 36 42 49 55 58 63 65 69 73 84 85 Necessary hints to those who would be rich Advice to a young tradesman The may to make money plenty in every man's pocket 88 Page 113 . 119 125 132 The art of procuring pleasant dreams Precautions to be used by those who are about to under take a sea voyage. Dialogue between Franklin and the Gout A parable against persecution On the death of relatives The ephemera an emblem of human life . 134 Account of a whirlwind at Maryland On the saltness of sea water . 140 derived from the study of insects On the effect of air on the barometer, and the benefits On the art of swimming . 142 On the same subject .145 On the free use of air. . 150 . 153 On the causes of colds . 154 Tendency of rivers to the sea.-Effects of the sun's rays on cloths of different colours On the magnetism and theory of the earth Queries and conjectures relating to magnetism and the theory of the earth On the nature of sea coal Effect of vegetation on noxious air Observations on the prevailing doctrines of life and |