178 Modern Fishculture in Fresh and Salt Water. 



They swam at five days old and took food the next day. 

 I raised about 600 yearlings, which were 4 to 4^ inches 

 long the next spring. My trout farm was not a success, 

 and in the spring of 1876 the property was rented to a 

 farmer, the large trout were sold and I opened the 

 screens and let all yearlings go into the trout stream 

 below. This stream had 100 chubs to one trout in it, 

 and if any grayling lived to breed in it their progeny 

 stood a poor chance. 



The adult fish brought down in 1874 lived but never 

 spawned ; they seemed to have been made barren by re- 

 moval from Michigan within a few days of the spawn- 

 ing season. 



Mr. Frank N. Clark made some trials with grayling 

 and so did the Michigan Fish Commission. Under 

 date of Feb. 23, 1899, Mr. Clark writes: "In response 

 to your letter, under date of Feb. 18, in reference to the 

 grayling matter, allow me to say that I can only refer 

 you to my report to Prof. Baird. You will find it in the 

 annual printed report of 1884. I have had specimens 

 of grayling in the ponds here from time to time, and my 

 experience has been that they acclimated themselves to 

 their surroundings in every respect, with the exception 

 of the fact that their eggs never developed properly. In 

 many cases there was ovarian disease, and the ova ap- 

 parently sloughed away. 



The only way to get good eggs is to procure the wild 

 fish just a few days before they are ripe ; then hold them 

 in penning crates, and when they are ready to spawn 

 handle them the same as whitefish. They cannot be 

 successfully manipulated if held for any great length of 

 time." 



The Au Sable is now a trout stream, but it is said that 

 a few of this beautiful, graceful fish are still there. Of 



