4 Vegetable Staticks* 



CHAP. I. 



Experiment s> /hewing the quantities imbibed 

 and perfpired by Tlants and Trees. 



Experiment I. 



JULY 3. 1724. in order to find out the 

 quantity imbibed and perfpired by the 

 Sun-Flower, I took a garden-pot (Fig. 1.) 

 with a large Sun-Flower, a, 3 feet -|- 4, high, 

 which was purpofely planted in it when 

 young. 



I covered the pot with a plate of thin 

 milled lead, and cemented all the joints faft, 

 fo as no vapor could pafs, but only air, thro' 

 a fmall glafs tube d nine inches long, which 

 was fixed purpofely near the ftem of the 

 plant, to make a free communication with 

 the outward air, and that under the leaden 

 plate. 



I cemented alfo another fhort glafs tube 

 g into the plate, two inches long and one 

 inch in diameter. Thro' this tube I watered 

 the plant, and then flopped it up with a cork $ 

 I flopped up alio the holes i, I at the bottom 

 of the pot with corks. 



I weighed 



