CONTENTS— co?j/rf. 



U.S.A. : The Relation of Rice Fields to Mosquitos in California 



U.S.A. : Measures against Rats and Plague . . 



U.S.A. :- The Bionomics of Tabainids in Nevada: : . . 



U.S.A.: Treatment of Mange in Small Animals-. - .. 



A Self-cleaning Canal Screen 



Carriage of Malaria by Hibernating Mosquitos 



Mosqnitos, particularly the -European Species, :andttIxeir=€3DnttJcd:- 



(Review) . . 

 The Differentiation of Rickettsia prawazekiirom R. ipecHculi 

 The Classification of Mosquitos . . 

 The Distribution of Pulex irritans 

 A Convcmiient Mosquito. Poison , < 



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