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ADDITIONAL NOTES: 489

Jeſs heated than land; tropical idands more heated in the

1 EF

day than the ſea, and are cooled more in the night. Co7- cluſio?; Uregular winds from other cauſes; only two or1- oginal winds north and ſouth; different ſounds of north- eaſt and ſouth-weſt winds; a Bear or Dragon in the „r&tic circle that ſwallows at times and diſembogues again above one fiſteenth part of the atmoſphere; wind inftru-

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ments 3; recapitulation«.

NoTE XXXIV.--VEGETABLE PERSPIRATION.

PvRE air from Dr. Prieftley's vegetable matter, and from vegetable leaves, owing to decompoſition of water; the hydrogene retained by the vegetables; plants in the ſhade are zanned green by the ſun's light; animal ſkins are tanned yellow by the retention of hydrogene; much pure air from dew on a ſunny morning; bleaching why ſooner performed on cotton than linen; bees wax bleached; metals calcined by decompolition of water; oil bleached

in the light becomes yellow again in the dark; nitrous

22 acid coloured by being expoſed to the ſun; vegetables perſpire more than animals, hence in the ſunſhine they purify air more by their perſpiration than they injure it by

their reſpiration 3; they grow faſteſt in their ſleep.

NoTE XXXV.--VEGETABLE PLACENTATION.

..=. Pod 7 2' Bups the viviparous offspring of vegetables; placenta- tion in bulbs and ſeeds; placentation of buds in the roots,

hence the riſing of ſap in the ſpring, as in vines, bIFCH; which ceaſes as ſoon as the leaves expand; production of the leaf of Horſe-cheſnut, and of its new bud; oil of vi- triol on the bud of Mimoſa killed the leaf allo; placenta-