192 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



class of eggs at Central Station I am convinced that large numbers of 

 eggs up to the very period of hatching can be handled in this jar. 



The necessity of arriving at methods of hatching the light or floating 

 eggs of many of our salt-water fishes has for several years impressed 

 itself upon the United States Fish Commission. No form of apparatus 

 heretofore devised has been satisfactorily operated to the accomplish- 

 ment of this purpose. The experiments made daring the summer of 

 1882 in the Chesapeake Bay with the eggs of the Spanish mackerel led 

 to the hope that the hatching jar, fitted up as a receiver, may be with 

 equal advantage employed in hatching this class of eggs. The number 

 of eggs obtainable was not enough to give 1 results sufficiently decisive 

 to establish this assertion. But these eggs, being subjected under the 

 conditions presented in the receiving jar to a current of salt water, be- 

 ing confined so as to prevent escape, and this confinement effected with- 

 out the use of appliances that would injure the delicate membrane of 

 the shell, there seems to be no reason why we may not use the jar as 

 successfully with this class of eggs as with those of the whitefish and 

 the shad. 



United' States Fish Commission, 



Washington, B. C, April 6, 1883. 



16.-THE SUCCESSFUL STOCKING OF STREAMS WITH TROUT. 



By WAKEMAN HOLBERTON. 



[From a letter to Prof. S. P. Baird.] 



Near Cleveland, Ohio, is a stream, very much of the nature of Cal- 

 edonia Creek, only finer and larger, which gushes from the earth in 

 such volume as to turn a mill not far from its source. This stream 

 never contained trout until 1872, when it was leased by a club and 

 stocked with trout which, I think, were obtained from Lake Superior. 

 Since then the trout have increased finely and the fishing is superb. It 

 is not unusual for trout to be taken there of three or even four pounds 

 weight. The members of the club are restricted to fifteen pounds a day, 

 and only allowed to fish three days in a week. The fish are well fed 

 and very lively. 



The trout which were put into some streams near here two years ago 

 are doing well. 1 noticed a marked increase in fishing last spring. The 

 California trout that we put in in 1881 were doing finely last year, and 

 had already grown to the size of four inches. I caught several of them 

 but returned them to the water. 



New York, March 9, 1883. 



