Vegetable Staticks. 2 r 
depth perfpired in 12 hours day, ^-7 
of an inch. 
So the fevcral fore- 
going perfpirations 
in equal areas are. 
" I VI in the vine in 12 
hours day. 
tV in a man, in a day 
and a night. 
ivT in a Sunflower, 
in a day and night. 
^ in a cabbage, in 1 2 
hours day. 
in an apple- tree, 
in 1 2 hours day. 
i^yin a limon-tree, 
in 12 hours day. 
The area of the tranfverfe cut of the ftem 
of this Limon-tree was = i . 44 of a 
fquare inch 5 hence the Tap's velocity here , 
will be to its velocity on the furface of the 
leavcs,as 1768: i for =i 7 < 58 . 
1 44" 
This is fuppoling the whole flem to be a hol- 
low tube j but the velocity will be increafed 
both in the ftem and the leaves, in propor- 
tion as the paflage of the fap is narrowed by 
the folid parts. 
By comparing the very different degrees 
of perfpiration, in thefc 5 plants and trees, 
C 3 we 
