148 JOSEPH HALL BODINE 



SUMMARY 



1. Catalase content of insects (grasshopper, firefly, potato- 

 beetle) decreases with increasing age and body weight. 



2. The rate of CO 2 output and catalase content in normal 

 animals seems to vary in the same direction, but in 'hiber- 

 nating' forms a marked decrease in CO2 output takes place 

 with no corresponding change in catalase content. 



3. Starvation results in decreased amounts of catalase. 



4. Further quantitative data regarding catalase content 

 and CO 2 output are required before any definite relationship 

 between the two can be established. 



LITERATURE CITED 



1 BuRGE, W. E., AND BuRGE, E. F. 1921 Jour. Exp. Zool., vol. 32. 



2 BuRGE, W. E. 1916 Amer. Jour. Phys., vol. 41, p. 153. 



3 Lund, E. 1918 Biol. Bull., vol. 34, p. 105. 



4 BoDiNE, J. H. 1921 Jour. Exp. Zool, vol. 32. 



5 Stehle and McCarty 1920 Jour. Biol. Chem., vol. 42, p. 269. 



6 BuRGE and Neill 1917 Amer. Jour. Phys., vol. 43, p. 58. 



