

t 



Vegetable Staticks. 



Hi 



- 



; 







79 

 feet long, with lateral branches; the diame- 

 ter of the tranfverfe cut *, where it was cue 

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

 branch I put into the cylindrical glafs e r , 

 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 ftcm, 

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

 then I cemented faft the joynt with a mixture 

 of Bces~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 

 ir firm with Pack-thread. 



At the lower end of the krge tube e was 

 cemented, on a letter tube z e, \ inch dia- 

 meter in bore, and 1 8 inches long : The 

 fubftance of this tube ought to be full | of 

 an inch thick, elfe 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, 







