14 



breeder in Kansas can bottle up some milt from his fish in a homoeo- 

 pathic phial and send it by mail or express to a Massachusetts breeder, 

 who can take a ripe spawner from his ponds and mix the Kansas 

 milt and Massachusetts eggs in the impregnating pan, and so generate 

 a cross between the two lish as well as if the Kansas breeder had sent 

 him, at a great risk, some male trout. The great ease with which 

 this crossing can be accomplished may some day lead to valuable 

 results. 



Another inference is that the old theory that a proportion of the eggs 

 ordinarily taken from the spawning trout are immature, and therefore 

 cannot be impregnated, must be given up. We have opposed this 

 theory all through our trout-breeding experience, and insisted that the 

 trouble in poor impregnations was not in the eggs but in the milt, as 

 it has now turned out to be. But the immature egg theory had its 

 advoca,tes in high quarters, and has been very generally received. 

 There can be no question about it, however, hereafter. If ninety- 

 five per cent of the eggs are impregnated and hatched by the Russian 

 method, then not more than five per cent of the eggs are immature, 

 and we doubt if even this small proportion are. 



Hermaphrodite Cod. 



Sir. — There was full-sized cod got here latel}'', containing roe and 

 milt both well developed. This, I suppose, is what you call an her- 

 maphrodite. The manager of the curing-yard told me he had never 

 met with another similar case in long years of experience in cod- 

 curino;. 



W. R. {Land and Water.) 



Castalia Springs. 



The Castalia Springs in Ohio promise to be one of the great natural 

 water supplies of the country for fish farming — like the Caledonia 

 Springs in 'New York, or the Ingliain Spring in Pennsylvania. The 

 Ingham Spring, it is estimated, runs 3,000 gallons a minute, and the 

 Caledonia Springs as many gallons a second. Dr. Sterling, of Cleve- 

 land, writes us that the flow of water at the Castalia Springs, the 

 temperature and the geological formations are nearly the same as at 

 Caledonia. The Castalia Springs are situated near Sandusky, Ohio, 

 and are now owned by Mr. J. Hoyt. 



Trout and white fish are being hatched there this season with 

 success. 



It should be remembered that it was in Ohio that the first experi- 

 ments in trout-breeding that attracted attention in America were con- 



