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. Vegetable Staticksl 



The furface of fuch human body is 15 

 fquare feet, or 2160 fquare inches. 



The furface of the Sun-flower is 561s 

 fquare inches, fo its furface is to the furface 

 of a human body as 26: 10. 



The quantity perfpir'd by a man in twen- 

 ty four hours is 3 1 ounces, as Dr. Keill found, 

 vide Medicina St at tea Britannica, p. 14. 



The quantity perfpired by the plant, in the 

 fame time, is 22 ounces, allowing two ounces 

 for the perfpiration of the beginning, and 

 ending of the night in July, viz. after even- 

 ing and before morning weighing, jutt be- 

 fore and after night. 



So the perfpiration of a man to the Sun- 

 flower is as 141 : 100. 



Abating the fix ounces of the thirty one 

 ounces, to be carried off by reipiration from 

 the Jungs in the twenty four hours j (which 

 I have found by certain experiment to be fo 

 much if not more) the twenty five ounces 

 mult»plicdby43 7 +4. the number of grains 

 in an ounce Avoirdupois, the product is 

 10937,- grains j which divided by 254 the 

 number of grains inacubick inch of water 

 gives 43 cubick inches perfpired by a man- 

 Which divided by the furface of his bod v 



e. 9 



1 



viz. 



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