Vegetable Statich . y 
I weighed this pot and plant morning 
and evening, for fifteen feveral days, from 
July 3* to Aug. 8. after which I cut off the 
plant clofe to the leaden plate, and then 
covered the flump well with cement; and 
upon weighing found there perfpired thro 8 
the unglazed porous pot two ounces every 
twelve hours day, which being allowed in 
the daily weighing of the plant and pot, I 
found the greateft perfpiration of twelve 
hours in a very warm dry day, to be one 
pound fourteen ounces 5 the middle rate of 
perfpiration one pound four ounces. The 
perfpiration of a dry warm night, without 
any fenfible dew, was about three ounces 5 
but when any fenfible, tho’ fmall dew, then 
the perfpiration was nothing; and when a 
large dew, or fome little rain in the nighty 
the plant and pot was increafed in weight 
two or three ounces. N.B. The weights 
I made ufe of were Avoirdupoife weights . 
I cut off all the leaves of this plant, and 
laid them in five feveral parcels, according 
to their feveral fizes, and then meafured 
the furface of a leaf of each parcel, by lay- 
ing over it a large lattice made with threads, 
in which the little fquares were i of an inch? 
B 3 eadu 
