20 Vegetable Staticks. 
hours day, wa‘s n ounces, its middle quart- 
tity 9 ounces, or 154- cubick inches. 
The 1 5 4 - cubick inches perfpired, divided 
by the furface 15 89 fquare inches, gives the 
depth perfpired off the furface in 1 2 hours 
day, viz. of an inch. 
The areaofatranfverfecut ofitsftem, i of 
an inch fquare, whence the fap’s velocity 
here, will be to its velocity on the furface 
of the leaves as 15I9 x 4 = 6356 : 1. 
Experiment V. 
From July 28, to Aug. 25. I weighed for 
10 feveral mornings and evenings a very 
thriving Limon-tree y which grew in a gar- 
den pot, and was covered as above : Its great- 
eft perfpiration in 1 1 hours day was 8 ounces, 
its middle perfpiration 6 ounces, equal to 
iof cubick inches. In the night it perfpired 
fometimes half an ounce, fometimes nothing, 
and fometimes increafed 1 or 2 ounces in 
weight, by large dew or rain, 
i The furface of its leaves was 2557 
fquare inches ; or 17 fquare feet -f- 59 
fquare inches; dividing then the 10 cubick 
inches perfpired by this furface, gives the 
2 depth 
