TABLE 1 

 Sedum acre 



These experiments were carried on in two sets, in one (A) of which the injury 

 to the leaves was reduced to a minimum, as the whole cluster was used. In the 

 second set (B) the leaves were cut. Only Dewar flasks were used, 70 grams of 

 leaves being used in each case with one exception, which has been explained. 

 The plants were quite young, growing in the open, in March. The experiments 

 extended from March 9 to March 14. 



Set A 



Set B 



Containing 35 grams. 



When the leaves were removed on March 11 (third day), decomposition had 

 begun in flask A, but the leaves were fresh and green in flask B, where aeration 

 was better. In Set B, there was a small amount of bacterial decomposition in 

 both flasks. 281 



