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SECTION VIII. 



Dry plants have very little or no 

 power to affeH air ; but r when 

 moiftened, they infeci air, 



I FILLED a jar with dry hay, 

 another with dry ftraw, and left it 

 inverted a good while; but could 

 not find the air altered. 



I put fome leaves of a lime tree, 

 dried for the purpofe, in a jar full 

 of frefh pump water; and placed 

 another jar, filled with an equal 

 number of frefh leaves of the fame 

 tree, near it in the fun. 



The dry leaves began much later 

 than the others to Yield round bub- 

 bles juft in the fame way, but which 

 did not grow fo quick, nor fo large. 

 However, in a few ' hours, a good 

 D 3 deal 



