American Fisheries Society 137 



bit of material including- labor, has to be contracted for the first 

 cost above wood is about fifty per cent. A great part of this is 

 for the frames that must be made and as the most of them must 

 be cut away, they, of course, become useless. Eeceiving tanks 

 for fry and frames for the picking troughs, one can be used for 

 making several. Also all frames for the legs can be used over 

 by bolting them together and when cement is hard unscrew the 

 bolts and they fall apart and can be re-used. 



l<low, I have written this paper for the purpose of drawing 

 the attention of the members of this association to the use of ce- 

 ment in constructing troughs for hatching fish. I want you to 

 ask questions and I shall answer them to the best of my ability. 

 There is no question in my mind about the superior qualities of 

 cement over all other materials, and I here make this prediction 

 that inside of ten years no other material Avill be used by the fish 

 culturist in the construction of buildings and troughs. 



DISCUSSION. 



Mr. Fullerton : I predict that inside of ten years all houses 

 and all troughs in them will be constructed of cement. 



Dr. J. A. Henshall, Montana: Do you reinforce any of the 

 work ? 



Mr. Fullerton : A"es, with a No. 4 soft wire run through the 

 wall and in the cross section. I just hook it in the long wire; I 

 do the same with the receiving tank. 



Mr. Frank A^. Clark, Xorthville, Mich. : I would like to ask 

 if this house has just been built? 



Mr. Fullerton : Xo. it has been built two years. 



Q. It has gone through one fall ? 



A. Yes. 



Q. I understand your l)uilding is 32 by 64; 30 by 60 inside? 



A. Yes. 



Q. What is the capacity of your house? 



A. We aim to put 2,000,000 trout eggs in the house. I have- 

 a pike-perch battery in there also. 



Q. One battery? 



A. Two. 



