216 FISHERIES OF THE UNITED STATES. 



HATCHING-TEOUGHS AND BOXES, STATIOI^ARY. 



39111. Holtou box (without the frames), which has beeu in use. S. Green, 



Rochester, N. Y. 

 42935. Hatching trough, used at the United States liatcliing-housc at Grand 



Lake Stream, Me. C. G. Atkins. 

 22247. A circular-shaped hatching can of tin, designed by F. Mather, which 



led to the adoi)tion of the following : 

 26995. Shad-hatching cone, with screen at the bottom, devised by Charles 



F. Bell and Fred. Mather. U. S. Fish Commission. 



39112. Frame and screen used for hatching lake trout, Cristivomer tiamay- 



cush. M. A. Green, New York Fish Commission. 



2695C. Salmon-egg hatching-baskets. Devised by Livingston Stone for use iu 

 the ]iIcCloud River, California. The baskets do not rest on the bot- 

 tom of the trough, and the water flows through them from the bot- 

 tom and sides and out at the top. L. Stone, U. S. Fish Commission. 



39103. Nest of trays for hatching-trough. Devised by Charles G. Atkins, 

 Bncksport, Me. U. S. Fish Connuission. 



26935. Model of hatching-frame in use at Grand Lake Stream, adapted to 

 use in a trough or in an open stream. Devised by C. G. Atkins. 

 Scale, full size. C. G. Atkins. 



The eggs are placed on all of the trays except the upper one. The 

 interstices, though too small for the escape of the eggs, per- 

 mit a change of water, and when the frame is shut it confines 

 the trays securely iu jilace. U. S. Fish Commission. 



39382. Grand Lake hatching-frame. For use in a trough or in an open 

 stream. Adapted only to large tish-eggs, like those of salmon. 

 Designed by Charles G. Atkins, assistant to the United States Com- 

 mission of Fish and Fisheries in 1875, and s'nce then in constant 

 use in the Schoodic salmon-breeding establishment at Grand Lake 

 Stream, Maine, U. S. A. When in use, the Avater tlows through 

 the frame horizontally. Not patented. 



The capacity of this frame is 35,000 eggs of salmon. 



39142. Hatching-jarsof glass, with self-picking screen. Invention of Oren 

 M. Chase, Detroit, Mich. 

 Five jars, full size. O. M. Chase. Michigan Fish Commission. 



26998. The Ferguson hatching-jar. Aglass jar with trays. The water flows 

 in at the bottom and out at the top. T. B. Ferguson. U. S. Fish 

 Commission. 



39108. Glass jar with screens for hatching trout. Devised by Thomas B. 

 Ferguson. U. B. Fish Commission. 



39463. Miniature hatching-box, for hatching trout or any tish requiring run- 



ning water. Arranged to place in the dwelling-house, or where- 

 ever water can be supplied by a pipe. Charlestown, N. H. Liv- 

 ingston Stone. 



39464. Model of fish-nursery for raising young trout less than six months 



old. i actual dimensions. Charlestown, N. H. Livingston 

 Stone. 



. Ferguson's improved conical hatcher, with removable top, used to 



prevent splashing. Also arrangement for easily removing bottom 

 screen. Valve used when bottom screen is to be removed or eggs 

 and young fish to be transferred. Furnished also with hook for 

 lifting vessel from frame. T. B. Ferguson. U. S. Fish Commission. 



39105. Another form of same, furnished with Clark's self-jjickiug gate at- 

 tachment. T. B. Ferguson, Baltimore, Md., and F. A. Clark, North- 

 ville, Mich. U. S. Fish Commission. 



