id Vegetal Je Staticks. 



The furface of fuch human b®dy is equal 

 to 15 fquarefeet, or 2160 fquare inches. 



The furface of the Sun-flower is 5616 

 fquare inches 5 fo its furface is, to the furface 

 of a human body, as 26 : 10. 



The quantity perfpired by a man in twenty- 

 four hours is about 3 1 ounces, as Dr. Keill 

 found. Vid. Medic. Stat. Brit an. p. 1 4, 



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 

 evening, and before morning weighing, juft 

 before 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 refpiration from 

 the lungs in the twenty- four hours 5 ( which 

 I have found by certain experiment to be fo 

 much, if not more ) the twenty-five ounces 

 multiplied by 438, the number of grains 

 in an ounce Avoirdupois, the product is 

 10950 grains; which divided by 254, the 

 number of grains in a cubick inch of water, 

 gives 43 cubick inches perfpired by a man : 

 which divided by the furface -of his body, 



vizu 



