CONTENTS 



Page 

 Proceedings of the 21st Annual Meeting of the American Association of Economic 

 Entomologists — ( Continued) 



Notes on insect photography and photomicrography /. G. Sanders 89 

 Photomicrography of the Diaspinae JR. A. Cooley 95 



The importance of proper method in entomological investigations 



F. M. Webster 99 



Biological notes on Murgantia histnonica Hahn R. I. Smith 108 



Means whereby the Economic Entomologist can advance 



apiculture E. F. Phillips 115 



A method of securing apicultural statistics B. N. Gates 117 



Types of cages found useful in parasite work C. E. Hood 121 



Tree crickets and injury to apple wood P. J. Parrott 124 



The distribution of San Jose scale in Iowa JI. E. Summers 137 



The self -boiled lime-sulphur mixture as a summer treatment 



for the San Jose scale A. L. Quaintance 130 



Notes on recent experiments for the coiftrol of the codling moth 



E. D. Sanderson 135 



