\66 ^^ E S S A Y on the Trocefs Chap. «. 



cbferv. 2. 2. Tbe much greatejl -part of the Fluid Mafs 

 that is thus drawn off^ and conveyed into the 

 Plants^ does not fettle or abide there ^ hutpaf- 

 fes thro* the Fores of them^ and exhales up int9 

 the Atmofphere. That the Water^ in thefe 

 Experiments, afcended only through the VeffeU 

 of the Plants^ is certain. The Glajfes F and G, 

 that had no Plants in them, though difpos'd 

 of in like manner as the reji, remain'd, at the 

 end of the Experiment, as at firft, and none 

 of the Water was gone off : And that the 

 greateft part of it flies off from the Flaiit into 

 the Atrnofphere is as certain. The leaft Pro-r 

 portion of the Water expended was to the 

 Ji/grneiit of the Plant ^ as 46 or 50 to i. And 

 in fome tlie Weight of the Water drawn off 

 was ICO, 2GO, nay, in one above 700 times 

 as much as the Plant had received of Addi- 

 tion. 



This fo continual an Fmijjion and Detach- 

 mnt of JVater, in fo great Plenty from the 

 Parts of Plants^ affords us a manifold Reafon 

 why Co'tntries that akound with Trees and the 

 larger Vegetahles efpecially, fhould be very 

 obnoxious to Bamps^ great Humdity in the 

 //nr^ and more frequent Rains, than others 

 that are more open and free. The great Moi" 

 jlure m the Air was a mighty Inconvenience 

 and Annoyance to thofe who firft fettled m 

 America ^ which at that time was much overt 

 grown with Woods and Groves : But as thefe 

 were burnt aixl; dejh'oyed, to make way for 

 Habitation and Culture of the Earth, the Air 



mended 



