METHODS OF STUDYING THE HABITS OF FISHES, WITH AN 

 ACCOUNT OF THE BREEDING HABITS OF THE HORNED DACE 



By Jacob Reighard 



Professor of Zoology, University of Michigan 



J- 



Paper presented tefore the Fourth International Fishery Con- 

 gress, held at Washington, U. S. A., September 22 to 26, 1 908 

 and awarded the prize of one hundred dollars in gold offered by 

 Theodore Gill for the best methods of observing the habits and 

 recording the life histories of fishes, with an illustrative example 



