76 



Vegetable Statich. 



vapours which are raifed by the warmth 

 the earth, are by the cooler air f 00 n 

 denfed into a vifible form. And I have h" 

 fcrved the fame difference between the co I 

 nefs of the air, and the warmth of water ' 

 a pond, by putting my Thermometer, which 

 hung all night in the open air in f Umnicr 

 time, into the water, juft before the rifing f 

 the fun, when the like reek or fog was ring 

 on the furface of the water. ° 













CHAP. II; 



Experiments, whereby to find out the force 

 with which Trees imbibe moifture. 



HA V I N G in the i ft chapter feen many 

 proofs of the great quantities of li- 

 quor imbibed and pcrfpired by vegetables, 

 I propofc in this, to enquire with what force 

 they do imbibe moifture. 



Tho' vegetables (which arc inanimate) 

 have not an engine, which, by its alternate 

 dictations and contractions, does in animals 

 forcibly drive the blood through the arte- 

 ties and veins ; yet has nature wonderfully 

 contrived other means, moft powerfully to 

 wife and keep i n motion the lap, as will 



in 





