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151 Vegetable Statkks. . 



I then inverted the flick, placing n fix [tf 

 ches deep in the water, and covered all the 

 bark from the furface of the water to z 

 the top of the receiver with cement 3 then 

 pumping the air which entered at the top of 

 the flick, paflcd thro' the immerfed part of 

 the bark : When I ceafed pumping for fonic 

 time, and the air had ceafed ifluing out; 

 upon my repeating the pumping it would 

 again ifiiic out. 



I found the fame event in Birch and 

 Mulberry flicks, in both which it iffucd moft 

 plentifully at old eyes, as if they were the 

 chief breathing places for trees. 



AndDr. GVwobfcrves, 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 vifiblc to a good 

 eye, without a glafs 5 but with a glafs the 

 " cane fecms as if it were ftuck top full 

 of holes, with great pins, being fo large 

 as very well to refemble the pores of the 

 skin, in the end of the ringers and ball 

 " of the hand. 



« In the leaves of Pine they are like- 

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

 <£ flanding all moft exaclly in rank and file, 



« thro' 



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