Aincncaii I'ishcrics Society. Hn 



Mr. Clark: Tt runs up to 12 gallons and down to between 

 6 and 7 gallons. Any reasonable amount will do tlie Clark 

 box; it is a box within a box, and the water flowing in forms 

 an eddy and passes down through the trays and escapes through 

 the holes in the bottom of the inside box and comes uj) around 

 the sides. Now, after the eggs hatch, the box is turned around 

 and the current then flows u\) ilinuigii these bottom luiles. 

 Understand, the oblong wire mesh is not used at the Xorthvillc 

 station or an other station that I have connection with, for th 

 reason that we always hold the fry on the same tray we hat .h 

 on; we don't allow them to ])ass through or over the tray, for 

 we couldn't handle the quantity we do with such a process. The 

 floor space where we handle from twelve to fifteen millio; doe? 

 not occupy, with the alleys, over about 28 feet — that is the length 

 of the troughs — b}- about 40 feet the other way. Of cou'se. our 

 methods are described more perfectly in the Manual. That 

 gives you — I think in the article on lake trout, nnjre particularly 

 — a full description of every point in regard to the workings of 

 our station. 



Mr. Ravenel: I only called attention to that because }ilr. 

 Stone, of Cape A'incent, has built the same thing for the brook 

 trout. I was there a few weeks ago and saw several stacks of 

 trays taken out. The fry were in splendid condition, the sac 

 just absorbed, and some were shipped the next day on trips of 

 twelve hours with practically no loss. I have forgotten the exact 

 number on the trays, l)Ut it was the first time I had seen brook 

 trout handled in that way and witli such s])lendid results. 



Mr. Clark: I would say further, Mr. President, in i.gard 

 to the trouble winch Mr. Thom])son speaks of, of. tpiite a large 

 Cjuantity of eggs not hatching out at the end, that we have no 

 such experience. The only trouble that we have, with lake trout 

 especially, is the blue sac, and we do have quite a percentage of 

 blue sacs, but no loss of eggs after they have been thoroughly 

 sorted: we hatch after that a])proxiniately 100 per cent. 



Mr. Hurlbut: What is the cause of the blue sac? (Laugh- 

 ter.) 



