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4.84 CONTENTS" OF THE

and ſpar in coal-beds; gravel over coal near Lichfield; Coal produced from moraßfies ſhewn by re DIER and

bog-ſMells, and muſcle-ſhells; by ſome parts of coal being ſtill woody; from Loch Neah and Bo CH and the Tem-

ple of the devil; fixed alkali; oil.

NoT: AXIV.-- GRANITE.

GRANITE the loweſt ſtratum of the earch 0. known z; porphory, trap, moor-ſRtone, whin-ſtone, ſNlate, bafſaltes, all volcanic produdtions diflolved 10 AnNa water; vol- canoes in granite ſtrata z differ from the heat of moraſſes from fermentation; the nucleus of the earth ejeted from che ſun; was the ſun originally a planet? ſuppoſed ſec- uon of the globe.

NoTE XXV.--EvAPORATION«.

1. SoLUTION of water in air; in the matter of heat; pulſe-glaß. 2. Heat is the principal cauſe of evapora- tion; thermometer cooled by evaporation of ether; heat given from ſteam to the worm- tub; warmth accompany- ing rain. 3. Steam condenſed on the edudttion of heat z moiſture on cold walls; ſouth-weſlt and north-eaſt winds. 4. Solution of falt and of blue vitriol in the matter of heat. 11. Other vapours may precipitate ſteam and form rain. 1. Cold the principal cauſe of devaporation z hence the ſteam diflolved in heat is precipitated, but that difolved in air remains even in frofts 3; fouth-weſt wind, 2. North-eaſt winds mixing with ſouth-weſt winds pro» duce rain; becauſe the cold particles of air from the nortit= eaſt acquire ſome of the matter of heat from the ſouth-

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