April, '10] SANDERSON' : TEMPERATURE AND INSECT GROWTH 139 



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]\Ir. Hewitt: I should like to thank Professor Sanderson for his 

 most interesting paper on the relation of temperature to the 

 growi;h of insects. I think one of the most important features of his ad- 

 dress is that he has given a very excellent summary of Bachmet Jew's 



