A III en can Fisheries Socictv. 



115 



the graylinn^ trou.uhs. We all know that in fcc(hn,<; trout tlicy 

 take tlie lart^cr particles, and that there is a very fine emulsion that 

 passes through the trough. Our idea was that this would fur- 

 nish a great deal of suitable food for the gravling, which seemed 

 to be the case, for the one trough outside grew verv well. In 

 the hatchery we found dif^culty in getting them to take food 

 in suflicient quantities. \\'e transferred them outside, made the 

 conditions the same as with the others, and we can tell bv their 

 size in each trough now the relative time at which thev were 

 transferred into the warmer water. \W fed them at first about 

 si.x times a day. and found apparently we were not feeding them 

 often enough. Those that got the six feedings and the food from 

 the trout troughs above grew very rapidly, but those that only got 

 the food six times did not thrive. We increased the number of 

 feeds and they seemed to respond very readily. \\"e have some 

 of the fish now. the largest ones al)out an inch hjug. 



The President: This seems to be quite an experience on 

 the graying, and the subject being new. I trust you will pardon 

 me if I give my experience. We hatched in spring water, piping 

 the water direct from a spring, and my pipe was set up under a 

 tent because I wanted water free from sediment. As the fish 

 hatched we moved them down into the hatcher\-, with the ex- 

 ception of one trough, which we kept supplied w ith spring water, 

 not from the spring direct, but from a distributing box. W'e 

 had connected with that same spring box three other rearing 

 trotighs filled with brook trout. The gravling in this one spring 

 box were fed but did not take food readily in a low temperature 

 (of about 48 degrees). They would take very little food, and 

 we lost nearly every "fish, and we finally moved two or three 

 hundred fish down into the hatchery. The water in the hatchery 

 is a mixture of river and spring water, and we foimd from the 

 locations of the different troughs, that the little fellows seemed 

 to do best in a temperature of about 70 degrees. All of these 

 fish were fed on emulsion of liver. When they first began to 

 take food we took our finest liver and set it in a pan of water, 

 and then skimmed of? the top for the grayling and let the thicker 



