26 
POM O.N As On 
rs 
ration in all their Parts, and confequently be full of Buds, Leaves, and 
Shoots, 
. 
THIS I advife my Readers to confider well, for hereon depends the 
whole Succefs of our Labours, which I fhall fully demonftrate when I 
come to lay down the Reafons and Manner of Pruning. 
BY the preceding Account it appears, That ‘tis very Beneficial to 
water the Leaves and Branches of Fruit Trees in an Evening, when 
. Seafons are very dry. 
‘ THE 20th Experiment of Mr. Hales, mention’d in_ his Vegetable 
Staticks, p..62. proves, That at two Feet Depth the Heat is very 
confiderable and conftant ; that, is, the fame by Night .as_ by Day, 
~ and that by its ftrong Influence, great Quantities of Moifture are con- 
tinually raifed from the lower Strata's, during the warm Summer Seafon, 
for the Support of Plants: ‘‘ The Impulfe of the Sun-Beams giving 
the Humidity of the Earth a brisk undulated Motion, which 3 watry 
“ Particles, when feparated and rarified by Heat, do afcend in Form of 
“‘ Vapour, and vigoroufly enter the Roots of Plants.” 
THEREFORE as this Gentleman further obferves, p. 66.) ‘tis 
very reafonable to believe, That the Roors of Vegecables are thus, by 
Means of the Sun’s genial Heat, continually water d with new Supplies 
of Moifture : For if the Humidity of the Earth did not. thus afcend, 
the Roots of Vegetables muft receive all the Nourifhment which they 
have from the Earth, merely by imbibing the next adjoining Moifture 
contain’d in thofe Shells of Earth which enclofe their Roots ; and 
if fo, why then that Earth which is next to their Roots would be 
always much dryer than that which is farther from it, which is not 
always fo: And again, if this was the Cafe, why then Plants that grow 
in the Earth, and root very fhallow, would be as foon perifh’d for 
want of Moifture, as the fame Plants when they are planted in large 
Tubs, fuch as thofe in which we plant our Orange Trees, whofe Bottoms 
preventing the rarified Vapour from penetrating the Roots of the within 
planted Trees, they do therefore foon exhauft away all the Moifture 
containd in the Earth of the Tub, and perifh if not fupplied with 
more, 
AND 
t 
