• Vegetation. 329 
pend on this Experiment 5 but thought it 
proper to mention it, as well deferving to 
be repeated with greater accuracy, both with 
Mint, and other proper plants, by noting the 
temperature of the air on a Thermometer:, 
hanging near the receivers, and obferving 
after fome time, whether the water a 
rifen, notwithftanding the air be no cooler 
than when the Mint was firfi: placed under 
the glafs. And for greater certainty, it will 
be advifeable to fufpend in the fame manner 
another like receiver with no Mint, but 
only water in it, up to a a. 
Experiment CXXIIT. 
In order to find out the manner of the 
growth of young (hoots, I firft prepared the 
following inftrument, ^iz,» I took a-fmall 
flick a, ( Fig. 40. ) and at a quarter of an 
inch diftance from each other, I run the 
points of five pins, i, 2, 3, 4, 5, thro' the 
flick, fo far as to ftand % of an inch from the 
flick, then bending down the great ends of 
the pins, I bound them all fall with waxed 
thread 5 I provided alfo fome red lead mixed 
with oil. 
In 
