Dr. Embody : It is not the size of the mosquito larvje so much as it is 

 the time of the year in which they are produced. We are not able to pro- 

 duce mosquito larvae before the first of July, and probably by that time 

 your bass would have reached a size large enough to take even the largest 

 mosquito. We could not produce them as early as May or June, although 

 it may be done in some other parts of the country. The first day or 

 two after the mosquito is hatched it is small enough for the smallest bass 

 to eat. 



Mr. Leach : We may try the experiment at some of our stations on 

 a large scale and demonstrate its practical possibilities in regard to feed- 

 ing the young bass. 



Mr. Hayford : At the New Jersey station we can secure the larvae 

 around the latter part of May. Under our conditions the bass do not need 

 the food much before the 15th of June, or the 1st of July. 



Mr. Titcomb : Do you know yet, Mr. Hayford, whether you will reduce 

 cannibalism, and, if so, to what extent, by the introduction of larvae? 



Mr. Hayford : I cannot say to what extent cannibalism will be re- 

 duced, although I am positive, from my comparison of the fish in the 

 ponds fed with the larvoe and those not so fed, that it is reduced con- 

 siderably. I also observed that in the ponds where the larvae are fed, 

 the young fish grow much more uniformly. 



Dr. Embody: I think that the micro-crustacea would be more impor- 

 tant in the spring of the year than the mosquito larvae. In all of the 

 ponds where we used a small dosage of milk, among the first forms to 

 appear were the little crustaceans of the genus Scapholeieris. They are 

 very closely related to the daphnia, of which Mr. Leach spoke, and so 

 small in size that the smallest fish can eat them. 



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