b NEW YORK STATE MUSEUM 



for the growth aud multiplication of fish may put it within the 

 po^^er of many to make substantial additions to the productivity 

 of areas under control, without gi'eat increase in the cost of man- 

 agement. These investigations have been conducted primarily to 

 ascertain the relations existing betR-een fish and insects they feed 

 upon, and the conditions necessary for the development of large 

 amounts of fish-food. Much of the preliminary work has been 

 accomplished, and the data alreadj^ obtained should prove of great 

 service to parties interested in fish culture, especially in making 



heretofore barren waters productive. 



E. P. Felt 



State Entomologist 



