

Vegetable Stalick. t i 9 



I repeated this Experiment with a large 

 Duke-Cherry branch, but could not perceive 

 more moifturc at the upper, than the lower 

 part of the gap, which ought to have been, 

 if the fap defcends by the laft year's wood 



or the bark. 



It was the fame in a Quince-branch as 



the 'Duke Cherry. 



N. B. When I cut a notch in cither of, 

 thele branches, 3 feet above r, at q } I could 

 neither fee nor feel any moifturc, notwith- 

 standing there was at the fame time a great 

 quantity of water palling by ; for the branch 

 imbibed at the rate of 4, 3 or 2 inches ^r 

 minute, of a column of water which was 

 half inch diameter. 



The reafon of which drynefs of the notch 

 q is evident from Experiment 11, viz. 

 becauie the upper part of the branch above 

 the notch imbibed and perfpired 3 or 4 

 times more water, than a column of 7 

 feet height of water in the tube could im- 

 pell from the bottom of the ftem to q y 

 which was 3 feet length of ftem j and con- 

 fequently, the notch muft necefiarily be 

 dry, notwithftanding fo large a ftream of 

 water was palling by j «w.s.bccaufc the branch 



K and 



* 



