American Fisheries Sucicly. Go 



Mr. Clark: Do you say you have not solved that ])r(il)lciu? 



Mr. Titcomb : Only for a small percentage. 



Mr. Clark: 1 thou<^ht perhaps from your remark thai you 

 meant to say that you did not rear them at all? 



]\Ir. Titcomb : Oh yes, we have reared some of them. 



Dr. Henshall: The great difficulty has been coagulation. 

 But my butchers take it from the animal immediately after it 

 has been slaughtered, they catch the blood in a vessel and stir it 

 l)riskly while yvi warm, producing a homogeneous mixture, and 

 preventing the objectionable separation ijito clots and s^-ruin. 

 By this process of briskly stirring tor several minutes the Ijlood 

 will IxH'ome a homogeneons liquid \\dth a film on top, and by 

 kee})ing it cool one caji preserve it for several days. Where it is 

 convenient to try the experiment I wish you would do so next 

 season. I find that it is the only artificial food that I have suc- 

 ceeded in feeding to grayling at first. Heretofore' we have had 

 to provide natural stream watxjr wherein they coubl liiid iia(iii-al 

 food. When first hatched they are only about the size of mos- 

 quito wigglers and should be fed the smallest food possible. 



Mr. Clark: I should infer from the doctor's pa]X'r and what 

 he says, that the one great object in using the blood is its ciu-ap- 

 ness — not that it is any better than good beef liver. 



Dr. Henshall: 1 tliiid< it is better. 



Mr. Clark: We raised some grayling fry on liver. IV-rbaps 

 500 or GOO out of r),()()() or 10,000, and there was nothing fed but 

 beef liver. \\c have not led aiiytbiiig but beef liver in our liatcli- 

 eries. Some of the older.mendjers will remend)er that I sjjoke of 

 it at our last nieeliiig. These fry were grown to weigh from one 

 to two pounds, and never had aiivthiiig hut liver. 



Dr. Henshall: \\\\\ you had natural stream water. 



Mr. Clark: .Natural spring water, and the grayling were 

 raised in spring watei-. 



Dr. Henshall : They would not grow in my spring water. 



.Mr. Clark: We raised them on liver exclusively, and sonu- 

 of them were sent to the Pan American Exposition at lUitfalo. 

 where Mr. h'avenel saw them. Of course the advantage' in the 

 blood is pe-rhaps this, that in starting the fry let it be brook 

 trout, gravling, white lisli oi- anything else, it may he a litth' het- 

 ivY on account of being liner, and they might get a (|uicker start : 



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