542 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL.84 



have been made and where the economic situation has been longest 

 appreciated, I know of no wealthy i)erson who has taken up the 

 serious study. Harris and Fitch were poor men ; Walsh made a 

 modest competence before he was able to devote his few remaining 

 years to ardent study and vigorous writing. All the others have been 

 poor men, although, fortunately, to a mere handful has come in later 

 life, from some source or another, money enough to carry on in good 

 shape and to leave something to their families. 



COMPARATIVE AMOUNT OF PUBLICATION BY DIFFERENT. 



COUNTRIES 



Here once more the invaluable " Review of Applied Entomology " 

 comes to our aid. I have made no attempt to estimate the number of 

 publications on the subject of medical entomology. It has been very 

 great, and practically every country in the world has contributed. 

 In agricultural entomology, a few facts as to ])ublication may be of 

 interest. In a broad way we may assume that the country which has 

 published the most has taken the liveliest interest in the subject and 

 probably has the greater number of workers. 



In 1916 the Review of Ai>plied Entomology published a tabulation 

 of the abstracts published in the first three volumes of the Review. 

 The numbers ran as follows: 1913, 1,037; I9i4> ^A94> 1915. i'773- 

 In each year the number of publications issued in the United States 

 was considerably larger than in any other country, and in 191 5 

 comprised about one-third of the whole number, with Russia second. 

 Great Britain third, Canada fourth. France fifth, Australasia sixth, 

 and Italy seventh. The detailed list is readily available and is jiub- 

 lished on page i of Volume 4 of the Review. 



During the period from the close of 191 5 to September, 1929, there 

 were reviewed 23,430 papers. I have been interested in analyzing this 

 list with the assistance of my friend and colleague, Mr. W. F. Tastet. 

 and the main results will not be uninteresting. It will perhaps hardly 

 be worth while to include the names of countries of which less than 

 100 papers have been reviewed, but with the others the list runs as 

 follows : 



United States 7,3ii (of these, 2,115 were published by the 



Federal Government, 4,383 by officials 

 of the State Experiment Stations, and 

 813 by others). 



Germany 2,029 



France 1,894 



Russia 1,886 



England 1,429 



