Fish Culturists' Association. 9 



ties have been introduced into waters only partially filled b}'^ common 

 sorts and where they have propagated surprisingly. If it is universally 

 true, it is due, I think, tt) the fact that the enemies of the new species do 

 not exist, while their food, if the locality is adapted to them, is abundant. 

 Subsequentlj' the enemies increase, by which the food is consumed, and 

 so in time the general equipoise of nature is established. 1 make this 

 suggestion, as, if it is well founded, it is of importance in increasing the 

 supply of fish food, and may either be confirmed or disproved hx your 

 experience. 



SALMON BREEDING. 



The Introduction of Eastern Fish into the Waters of the Pacific Slope, 

 together with an Account of Operations at the United States Sal- 

 mon Breeding Establishments on the McCloud River, California. 



BY LIVINGSTON STONE. 



Mr. President, and members of the American Fish Culturists^ Association : 

 Gentlemen : — "With your permission I will make a slight deviation 

 from the terms of the subject which has been assigned me, and will 

 endeavor to give an account both of my operations in California in pro- 

 curing salmon ova, and also of the attempt to introduce other varieties 

 of fish into the waters of the Pacific slope. 



SEASON OF 1872. 



As many of you are aware, I arrived at the spawning grounds of the 

 Sacramento salmon too late j'ear before last to obtain more than a few 

 thousand eggs, which were dul}' shipped eastward, and have since been 

 hatched and placed in the Susquehanna River, where I am informed they 

 thrive remarkably well. 



After the spawning season of 1872 was over I intended to go to Oregon 

 and examine portions of the Columbia River, with a view to learning 

 what were the facilities there for procuring salmon eggs. 



INTEODUCING WHITE FISH {Cm-egonm alMs) INTO CALIFOKNIA. 



I had previously suggested the idea of introducing white fish into 

 California by shipping the eggs across the Continent, and postponed the 

 trip to Oregon on receiving a request from Mr. S. R. Throckmorton, of 

 the California Fish Commission, to look up a suitable place for the hatch- 

 ing of a shipment of white fish eggs, which Professor Baird had promised 



