84 TWENTY-EIGHTH ANNUAL MEETING 



Mr. Clark: We can keep them in ponds in the warmer 

 water, if we have plenty of it. Mr. Stone informed me that 

 Dr. Henshall, when he sent these on, advised that w€ be sure 

 and hatch them in creek water, and keep them in creek water. 

 We did not hatch them in creek water and we are not keeping 

 them in creek water, because our creek water is not so clear 

 and nice as our spring water. His idea was that we could not 

 hatch them in our spring water. 



Mr. Titcomb : As I understood it, the question was whether 

 the grayling would survive in warmer water than our brook 

 trout? 



President Peabody: That is it. 



Mr. Titcomb: I understand they require cold water. The 

 cold, swift mountain streams of Montana are their natural 

 habitat, and also some of the cold water lakes. These eggs 

 Mr. Clark received came from the station^ I presume, from 

 which I received some^ and w^ere taken in what is called Ked 

 Rock Lake. 



Secretary Whitaker: In answer to a question put by the 

 President to Mr. Clark, I want to say that in my opinion there 

 is no difficulty about grayling and trout living in harmony, at 

 least such is disclosed to be the fact by the literature in Eng- 

 land upon the subject from Francis and Walton down to the 

 present day. There they are found in the same stream. So far 

 as the temperature of the water is concerned I know nothing 

 about it further than the character of the streams where they 

 are found in Michigan. They are cold spring streams, and 

 some of the best results obtained in trout culture in the United 

 States have been had in old grayling streams. They do not 

 inhabit streams south of a belt stretched some twenty or thirty 

 miles north of Grand Rapids, diagonally northwest and south- 

 east across the state. They are not indigenous to the streams 

 below that line, so far as my knowledge goes. 



President Peabody: They practically require the same 

 water as brook trout. 



Secretary Whitaker: Oh, yes. 



Mr. Titcomb: May I inquire how you account for the disap- 

 pearance of the grayling in your trout waters? 



Secretary Whitaker: I have had occasion to refer to that 

 in our reports three of four times, and there is no question 

 that it is due to the lumbering operations in our state. 



President Peabody: Are the trout similarly affected? 



Secretary Whitaker: No; the spawning season of the gray- 

 ling is later. During the winter the streams are filled with 

 logs, and when the ice passes out in the spring, which is be- 

 fore the grayling eggs have hatched, they destroy the beds and 

 kill the ova. 



