15 i Vegetable Statich. 



I then inverted the flick, placing n fix in- 

 ches deep in the water, 2nd covered all the 

 bark from the furface of the water to z, 

 the top of the receiver with cement 5 then 

 pumping the air which entered at the top of 

 the fiick, paffed thro' the immerfed part of 

 the bark : When I ceafed pumping for fome 

 time, and the air had ceafed ifluing out 5 

 upon my repeating the pumping it would 

 again iitue out. 



I found the fame event in Birch and 

 Mulberry flicks, in both which it iffuedmofl: 

 plentifully at old eyes, as if they were the 

 chief breathing places for trees. 



And Dr. Grew obferves, that " the pores 

 iC are fo very large in the trunks of fome 

 " plants, as in the better fort of thick walk- 

 " ing canes, that they are vifible to a good 

 " eye, without a glafs 5 but with a glafs the 

 Ci cane feems as if it were ftuck top full 

 cc of holes^ with great pins, being fo large 

 " as very well to refemble the pores of the 

 " skin, in the end of the fingers and ball 

 " of the hand. 



" In the leaves of Pine they are like- 

 u wife, through a glafs, a very elegant fhew, 

 ct ftanding all mod exactly in rank and file., 



" thro' 



