27 



Holmesburg 



United States Entomological Field Subofflee (for 

 cooperation see Riverton, N. J.). — Located in 

 the Washington Hotel. 



Japanese beetle quarantine operations. C. W. 

 Srockwell. junior administrative officer in 

 charge : address, United States Entomological 

 Laboratory. Riverton, X. J. 



Norristown 



United States Entomological Field Suboffice (for 

 cooperation see Riverton, N. J.). — Located on 

 the Germantown Pike at Penn Square. 



Japanese beetle quarantine operations. C. W. 

 Stockwell, junior administrative officer, in 

 charge ; address, United States Entomological 

 Laboratory, Riverton, X. J. 



Philadelphia 



United States Entomological Field Suboffice (for 

 cooperation see Riverton, N. J.). — Located at 

 2027 Arch Street. 



Japanese beetle quarantine operations in 

 Pennsylvania. C. W. Stockwell, junior admin- 

 istrative officer, in charge; or address United 

 States Entomological Laboratory, Riverton, X. J. 



United States Entomological Labo)*atory (coop- 

 eration with University of Pennsylvania) . — 

 Located at the University of Pennsylvania. 



Biological investigations of the strawberry 

 leaf roller and the Colorado potato beetle, and 

 experiments on the physiological action of vari- 

 ous insecticides. D. E. Fink, assistant ento- 

 mologist, in charge. 



