J^egetahle Statkks. y 
I weighed this pot and plant morning 
and evening, for fifteen fevcral 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* 
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 greatefl perfpiration of twelve 
hours in a very warm dry day, to be one 
pound fourteen ounces ; 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 5 and when a 
large dew, or fome little rain in the night, 
the plant and pot was increafed in weight 
two or three ounces. N. B. The weights I 
madeufe 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 fquarcs were 4 of an inch 
B 3 each j 
