REPORT ON MOSQUITOES. 9 



tions. It js rare to find so unselfish a devotion to the investiga- 

 tion of any subject, for Mr. Brakeley served Avithout expectation 

 of reward of any kind. 



Mr. Edgar L. Dickerson has been associated with me through- 

 out the investigation, even before the law providing for it was 

 passed and while I was 3^et undecided whether I could reasonably 

 claim a practical outcome for the study. Together we worked 

 out the life history of Culex sollicitaiis in 1902, and thus gained 

 the clue to a practical solution of the problem. We demonstrated 

 for the first time that this species laid its eggs, not in water, but 

 in the marsh mud. and that its vitality was sufficient to with- 

 stand a three months diying out. 



Mr. Dickerson is now assistant to the State Entomologist, 

 and his work in this investigation is incidental and arranged so 

 as not to interfere with the duties of his olfice. Nevertheless, he 

 has done a great deal of work in making special studies and in 

 noting- the material that came to hand. To him was also intrusted 

 the test of the usefulness of certain materials supposed to be 

 valuable as destroyers of larv?e, and especially the experiments 

 with the sulphate of copper. The results of these tests are inter- 

 esting and are elsewhere given. Special mention should be made 

 also of the fact that the dissections for salivary glands and other 

 internal structures of the moscjuito were made by Mr. Dickerson. 



Mr. Hermann H. Brehme has been associated with the inves- 

 tigation from the time funds to make it became available, and 

 his assignments ha\e been in general the salt marsh areas. No 

 one has a better knowledge of this kind of territory and it would 

 have been impossible to get a better man for the work. Mr. 

 Brehme has had assignments inland, chiefly along the first range 

 of the Orange Mountains; but his main work has been along 

 shore, which he has covered from Newark to Seven Mile Beach 

 with scarcely a break. 



During the early part of the season of 1904 his assignment 

 was the practical direction and supervision of the work done, 

 first at Monmouth Beach and afterward at Newark. The experi- 

 mental work at Newark in 1903 was laid out by him and prac- 

 ticallv the entire scheme of the Newark drainage, comprising 

 almost 400,000 feet or over sixty-five miles of ditching, is his 

 work. As to its efi^ectixeness there is no question. Mr. Brehme's 

 work will be frequently referred to in the body of the report. 



Mr. John A. Grossbeck began field work early in 1903, and 

 served throughout the season making collections and surveys at 

 various points in the State. Thoug^h he did some salt marsh 

 work. ne\-crtheless his principal assignments were to interior 

 points and especiallv the \allcys of the TIackensack and Passaic 



