April, '10] SANDERSON : TEMPERATURE AND INSECT GROWTH 



Herzcontraktionen pro Minute bei Raupen 

 von bombyx mori 



60 



123 



e 

 o 

 •a 



< 



V 



Q 



10 12 M 16 



Temperatur 



18 20 



24 % 



80 



Fig. 15. Relation of temperature to the rate of heart contraction of larvae 

 of Bombyx mori, according to Tichomirow (26), from Bachmetjew. 



