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1 2 Vegetable Stanch. 



Co dry and dufty, as to be unfit for veg eta , 

 tion I weighed it, and found it had loft 

 6 pound + 1 1 ounces, or 1 94 cubick in- 

 ches of water, near | part of its bulk. 



Some days after, the fecond cubick foot 

 being dryer than either the firft or third, was 

 decreafed in weight io pounds. 



The third cubick foot, being very dry and 

 dufty, had loft 8 pounds -\- 8 ounces, or 247 

 cubick inches, viz. ? part of its bulk. 



Now fnppofing the roots of the Sun- flower 

 (the longed of which reached 15 inches 

 every way from the ftcm) to occupy and 

 draw nouriihment from 4 cubick feet of 

 earth, and fuppof e each cubick foot of earth 



to afford 7 pounds of moifture, before it be 

 too dry for vegetation ; the Plant imbibing 

 ,smd perfpiring 22 ounces every 24 hours, that 

 will be 28 pounds of water, which will be 

 drawn off in 21 days and 6 hours; after 

 which the Plant would pcrifh, if there were 

 not frefh fupplies to thefc 4 cubick feet of 

 earth, either from dew or moifture arifmg 

 from below 1 5 inches ( the depth of the 

 roots) up into the earth occupied by the 

 roots. 



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