Vegetable Statkks. 79 



feet long, with lateral branches 5 the diame- 

 ter of the tranfverfe cut i, where it was cut 

 off, was i of an inch : The great end of this 

 branch I put into the cylindrical glafs e r y 

 which was an inch diameter within, and 

 eight inches long. 



I then cemented faft the joynt r, firft fold- 

 ing a ftrap of fheeps skin round the ftem, 

 fo as to make it fit well to the tube at r 5 

 then I cemented faft the joynt with a mixture 

 of Bees-wax and turpentine melted together 

 in fuch a proportion, as to make a very ftiff 

 clammy Pafte when cold, and over the cement 

 I folded feveral times wet Bladders, binding 

 it firm with Pack-thread. 



At the lower end of the large tube e was 

 cemented, on a leffer tube z> e, % inch dia- 

 meter in bore, and 1 8 inches long : The 

 fubftance of this tube ought to be full f of 

 an inch thick, elfc it will too eafily break 

 in making this experiment. 



Thefe two tubes were cemented together 

 at e, firft with common hard brick-duft ce- 

 ment to keep the tubes firm to each other ? 

 but this hard cement would, by the different 

 dilatations and contractions of the glafs and 

 cement, feparate from the glafs in hot wea- 

 4 ther,, 



