Anierinm FisJi cries Socieiy. 81 



ling- knows. Tlie ^Nfontana grayliiig liatclics out and lies on the 

 bottom, Avliili' tlie ^Vrichigan gravlino- pops out of tlie shell and 

 swims like a whitefish. That is a difference that anybody will 

 recognize; while the parr-niark is not visible on the Michigan 

 grayling at any time. 



Dr. Bean: That simply illustrates what T had in mind. I 

 have been studying the young grayling chiefly I'roni the books, 

 and Mr. Clark has had the better opportunitv of studying it in 

 the field. That is where I go when 1 can. but when T cannot T 

 am limited to books. The l)ooks all sav that the young gravling 

 ought to have ])arr-niarks; the l)Ooks also say that a male white- 

 fish in the breeding season ought to have tubercles on the scales, 

 sometimes it has and sometimes it has not. As a matter of fact, 

 we do not know nearly all that is to be known about fish — even 

 the wisest of us. There is a great deal more to be learned and it 

 is to be learned from the fish themselves and not from Ijooks. 



]\rr. Titeond): I was going ^:o bring up a point which the 

 doctor has brought up about the steelhead trout, and I think it 

 should be emphasized as much as possible, and that is, as to the 

 danger of introducing them into waters where you have the com- 

 mon trout. I should be inclined to treat them as just about as 

 dangerous as the black bass to introduce in trout water. They 

 are all right for our larger lakes, but I should l)e cautious about 

 putting them into a lake with land-locked salmon even, but in 

 any of our larger lakes with the lake trout it would be all right. 



Dr. Birge : AYhat do you mean by larger? 



^Ir. Titcoml): Xot the great lakes necessai'ilv. \\'e have, 

 for instance, a lake in Vermont six miles long where we are in- 

 troducing steelhead trout very successfully, hut that has nothing 

 in it now but lake trout and small fish food. Tn ^[aine the com- 

 mission has discontinued the distribution of steelhead trout, be- 

 cause almost all their Avaters wiiich have not speckled trout have 

 the land-locked salmon, which is valuable, and we cannot afford 

 to lose them l\y the introduction of a new variety; and ^Ir. Pea- 

 body in considering that fish, should consider seriously where he 

 })uts it in Wisconsin. 



The President : "Would it do to put them in the same lakes 

 with The bass, pickerel and that class of fish, armored fish? 



^Ir. Titcomb: That is a difficult question to answer. The 



