446 



Conclusions. 



1. Codling-moth larvae contain large quantities of the enzyme 

 catalase. 



2. The quantity of catalase per unit of larval weight varies con- 

 siderably in different individuals. 



3. Catalase content is directly correlated with the health and 

 continued life of larvae. 



4. Catalase content may be directly correlated with pupation and 

 dormacy. In order to test this conclusion a large series of tests should 

 be made covering each day of larval life from the time the larvae leave 

 the apple until time of pupation. 



Bibliographical Reference. 

 BURGE, W. E. 



1916. Relation between the amount of catalase in the different muscles 

 of the body and the amount of work done by these muscles. Am. 

 Jour. Physiol. 41: 153-161. 



