44 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 8 



ture, filing cases and typewriters. As might be expected, there is- 

 much variation in the amount and kind of equipment used by the 

 different organizations. 



The percentages of the total expenditures for equipment run as 

 follows: County A, 5 per cent and 4 per cent in 1913 and 1914; County 



B, 9 per cent, 5 per cent and 7 per cent in 1912, 1913 and 1914; County 



C, 6 per cent, 6 per cent and 6 per cent in 1912, 1913 and 1914. 



Education 



Under the head of education is included the publication and dis- 

 tribution of educational pamphlets, the furnishing of newspaper and 

 magazine articles, the giving of lectures, and the preparation and plac- 

 ing of exhibits. 



With the exception of that used in publishing the annual reports^ 

 very little money has been expended on education. This is not due 

 to little educational work having been done but to the fact that the 

 administrative officers and commissioners have furnished much of the 

 matter and the publishers have printed it without cost to the com- 

 mission. In nearly all cases, however, it has been found advisable to 

 prepare and distribute a simple statem.ent of mosquito life history and 

 control methods. , 



It should, also, be said that one of the most effective methods of 

 education is found in the prompt and efficient prosecution of persons 

 who insist on maintaining mosquito breeding nuisances. 



Salt Marsh 



From the time that Dr. John B. Smith completed his proof of salt 

 marsh mosquito migration, it has been evident to all students of mos- 

 quito elimination that in every area w^ithin reach of a breeding salt 

 marsh, mosquito control depends on the prevention of breeding on 

 that marsh. This principle holds good for counties A, B and C now 

 just as it did before drainage. 



Drainage has not eliminated all the breeding but has cut it to a 

 point where it can be controlled. In fact, there are certain parts of 

 the salt marshes of Newark Bay and the Hackensack River w^here the 

 ordinary ditching will not do the work of elimination even to this 

 extent — where it is necessary to dike and tide-gate and in a few in- 

 stances to pump. 



That the commissions realize the importance of the salt marsh is 

 indicated by the percentage of the total expenditures devoted to salt 

 marsh work. In County A, 32 per cent and 29 per cent were used in 

 1913 and 1914; in County B, 14 per cent, 30 per cent and 31 per cent 



