EXPERIMENT STATION EEPORT. 659 



marshes before the breeding season of 1906 opens. The old work 

 done at the mouth of the Elizabeth river has stood the test of time 

 during the summer of 1905. It will probably require the entire season 

 of 1906 and the expenditure of between $4,000 and $5,000 more to 

 make Elizabeth mosquito-proof. 



The marsh areas at Linden and Rahway were carefully surveyed, 

 and it was estimated that about $5,000 would be required to clean out 

 that territory, the bulk of the amount being needed at Linden. Ef- 

 forts were made to reach the persons interested in the government 

 and property of these municipalities; but absolutely without effect. 

 No one seemed to care enough about the towns to consider the mos- 

 quitoes as a detriment. Yet the Linden meadows especially, are a 

 menace to the territoiT lying to the north, northeast, west and north- 

 west. It is from these marshes that the bulk of the supply gets up 

 the valley of the Rahway and through the gap at Milburn into the 

 Madison and Morristown regions. Their influence is therefore wide- 

 spread, and so long as conditions remain as they are now, the localities 

 just mentioned will be subject to periodical irruptions. 



It may be of interest to note, in this connection that the conditions 

 near Madison and Morristown were specifically investigated by Mr. 

 Grossbeck, and that alone, or with Mr. Brehme, he visited the Great 

 Piece meadows, finding them, this year, almost free from bad mosquito- 

 breeding areas. 



Irvington, , Arlington and Kearny were all carefully surveyed at 

 the request of the local boards of health, and on the whole these towns 

 are in good condition except for that stretch of meadow belonging to 

 Kearny, which lies south of the Pennsylvania railroad and at the 

 junction of the Hackensack and Passaic. This corner is now in 

 process of improvement by filling, and in another year will probably be 

 eliminated as a mosquito breeder. During the season of 1905 an early 

 brood of considerable extent and one very large late brood were de- 

 veloped, the specimens finding their way chiefly to nearby Jersey City 

 and up the valleys of both the Hackensack and the Passaic. The 

 marsh species were traced north into the mountains near Paterson by 

 Mr. Grossbeck, and most of the specimens in the lowlands in both 

 valleys were supplied from this source. 



Jersey City has an easy problem to deal with, and a careful sur- 

 vey of the marsh land area showed that for $3,500 all the infested 

 territory could be made safe. The local board of health was inter- 



