6 NEW YORK STATE MUSEUM 



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

 power of many to make substantial additions to the productivity 

 of areas under control, without great increase in the cost of man- 

 agement. These investigations have been conducted primarily to 

 ascertain the relations existing between 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 already obtained should prove of great 

 service to parties interested in fish culture, especially in making 

 heretofore barren waters productive. 



E. P. FELT 

 State Entomologist 



