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Vegetable Stalicks. 



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It is needful to (hade all the cemented 

 joints from the Sun with loofe folds of 

 paper, clfe its heat, will often melt them, 

 and fo dilate the cement, as to make it 

 be drove forcibly up the tube , which de- 

 feats the Experiment. 



The Vines to which the tubes in this Ex- 

 periment were fixed, were 20 feet high from 

 the roots to their top j and the glais tubes 

 fixed at feveral heights b from the ground, 

 from fix to two feet. 



The fap would rife in the tube the firft 

 day, according to the different vigor of the 

 bleeding (late of the Vine, either 1, 2, 5, 

 1 2, 1 5 , or 2 5 feet j but when it had got to its 

 greatcft height for that day, if it was in the 

 morning, it would conftantly begin to fub- 



fide towards noon. 



If the weather was very cool about the 

 middle of the day, it would fubfide only 

 from 11 or 12, to two in the afternoon; 

 but if it were very hot weather, the fap 

 would begin to fubfide at 9 or 10 a clock, 

 and continue fubfiding till 4, 5> or 6 in the 

 evening, and from that time it would con- 

 tinue ftationary for an hour or two; after 



which it would begin to rife a little, but 



not 



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