oil Mosquito Extcrnnnation. 57 



water. I have suggested in Brooklyn and for Brooklyn for 

 the extermination of malaria and the mosquitoes in the Park 

 that, in my opinion, the only solution will be the introduc- 

 tion of sea water, substituting it for the present fresh water in 

 the Park. That question is not absolutely settled, as to whether 

 the Culex Sollicitans can live in pure sea water. My own ex- 

 perience in connection with it for the last two summers is it 

 will not, but I would like to have the gentlemen interested in 

 this question examine that in order that it may be fully and dis- 

 tinctly known, so that the question of the transformation of 

 Prospect Park may be settled. As yet it is not fully determined, 

 and I want to have the scientific question settled as to whether 

 the introduction of sea water would absolutely preclude the 

 presence of the Sollicitans ; all others it certainly would, and 

 therefore I put the question before the gentlemen here so that 

 it may be taken up and that question brought to a solution. 



The question of fish is already solved. The introduction 

 of sea water would necessitate the proper inflow and outflow 

 similar to the tide and certainly allow the introduction of fish, 

 but the question is simply an abstract one, namely, Can the sol- 

 licitans live and propagate in sea water? I would like that 

 settled. 



Chairman : That is a most interesting question, doctor, 

 and if there is any gentleman here who can throw any light on 

 the question we should be very glad to hear from him. I pre- 

 sume, however, that there is no one more competent to speak 

 in that regard than the doctor himself. 



Dr. JuNOR : That is my experience. I received a letter from 

 Dr. Howard in which he has a little hesitancy regarding the 

 question of the Culex Sollicitans. I wrote to Virginia Beach 

 to a hotel owner there, where there was a lake immediately 

 behind the house, and that lake was a fresh water lake, and they 

 were pestered with mosquitoes and malaria and were about 

 to give up the hotel. They transformed that from a fresh 

 water into a salt water lake, and the gentleman who owns 

 the hotel writes me that they have neither mosquitoes nor ma- 

 laria. At the same time Dr. Howard says he sent an agent to 

 the lake to find out if there were any mosquitoes there, and 

 he found no mosquitoes and no malaria about the lake. That 

 is eight years since the transformation was made. That would 

 seem to be enough proof in this line, but I would like to have it 

 absolutely settled. 



