74 EVERETT F. PHILLIPS. 



based on the law which governs the queen in moving over the 

 comb and in choosing where she shall lay her eggs and on the 

 law which governs the bees in cell building. We leave it to our 

 critic to formulate these laws since we confess to a lack of mathe- 

 matical ability for any such problems. 



Finally we acknowledge the mistake in averages mentioned by 

 Mr. Lutz but can only state that we believe this to be the only 

 correct criticism of our paper which he has made. 

 ZOOLOGICAL LABORATORY, 



UNIVERSITY OF PENNSYLVANIA. 



