i8 N. J. Mosquito Extermination Association 



teresting, indicating that operations were then going on in the United 

 States, at Panama, in the West Indies, especially in Jamaica, in the 

 Amazon region and in south Brazil, in Spain, Italy^ Greece, in the 

 German colonial possessions, in the French colonial possessions, in 

 Egypt at Khartoum, in South Africa at Durban, in the Malay States 

 and in Formosa. The work thus indicated in 1910 continued to in- 

 crease in volume, and colony after colony and country after country 

 Vv'cre added to the list. And then came the great war. From 191 o 

 to 1914, and indeed until 191 5, a great number of articles on mos- 

 quitoes were published in different parts of the world, but as the 

 intensity of the world struggle increased printing facilities were 

 greatly lessened and interchange between countries of such publica- 

 tions as were issued was almost entirely stopped. We don't know 

 today what was done in the way of mosquito work in Germany and 

 Austria and the countries allied to these empires. 



It will be difficult, in fact, to estimate the number of articles that 

 have been published on mosquitoes and mosquito work of late years. 

 There are several publications that print reviews of the principal 

 contributions of this character, but the places of publication are so 

 various in character and in distribution that any estimate of the total 

 number must be a good deal of a guess. They are published in sani- 

 tary and medical journals, in engineering journals, and in entomo- 

 logical journals and proceedings. I have made some effort to keep 

 up with the progress of the world in this important matter and 

 have brought together some statements which will indicate without 

 doubt that at present the civilized world is well informed on the 

 subject of mosquito remedies and that we are very greatly advanced 

 not only in our knowledge of the classification and biology of the 

 mosquitoes of the world but in actual accomplishments in the way 

 of lessening many regions from their danger. 



In 191 7 was pubHshed the final volume of the four-volume Car- 

 negie Institution Moinograph of the Mosquitoes of North and Central 

 America and the West Indies, but studies of the general character 

 of those described in the monograph have been carried on elsewhere. 

 The two great centers for mosquito study from the taxonomic point 

 of view are the United States National Museum at Washington and 

 the British Museum of Natural History in London. Edwards in 

 the British Museum has been, during the past eight or more years, 

 describing all the new forms that have been sent in from Borneo, 

 from Hong Kong, from India, Madeira, Ashanti, the New Hebrides, 



