[73] FISHERIES OF THE UNITED STATES. 1227 



Hatching barge — Continued. 



ferrecl to a stationary one, as it can be towed to different locali- 

 ties during the height of the spawning season, thus obviating 

 the necessity of having several outfits of hatching apparatus, 

 the one sufficing for the entire work. The barge is fitted with 

 Bell and Mather cones, formerly extensively used in hatching 

 shad eggs. Size, 8 by 10 inches. Avoca, N. C, 1877. 2,249. 

 U. S. Fish Commission. 



Hatching barge. 



Photograph of the interior of U.S. Fish Commission hatching barge, 

 employed in the shad- work in Maryland, Virginia, and North 

 Carolina. The barge is a floating hatchery, being preferred to 

 a stationary one, as it can be towed to different localities during 

 the height of the spawning season, thus obviating the necessity 

 of having several outfits of hatching apparatus, the one suffic- 

 ing for the entire work. The barge is fitted with Bell and 

 Mather cones, formerly extensively used in hatching shad eggs. 

 Size, 30 by 40 inches. Enlarged by electric light from an 8 by 

 10 negative. Avoea, N. C, 1877. 2,249. U. S. Fish Commis- 

 sion. 



Hatching steamer Fish Hawk. 



Photograph of the steamer Fish Hawk, employed by the TJ. S. Fish 

 Commission for scientific investigations and for hatching pur- 

 poses. The steamer is fitted with hatching apparatus employed 

 in hatching eggs of the shad, in the waters of Maryland and 

 North Carolina, during a portion of the year. Size, 8 by 10 

 inches. Washington, D. C, 18S2. 2,255. U. S. Fish Commis- 

 sion. 



Hat en en g steamer Fish Hawk. 



Photograph of the steamer Fish Hawk, employed by the TJ. S. Fish 

 Commission for scientific investigation and for hatching pur- 

 poses. The steamer is fitted with hatching apparatus, employed 

 in hatching eggs of the shad, in the waters of Maryland and 

 North Carolina during a portion of the year. Size, 30 by 40 

 inches. Enlarged by electric light from an 8 by 10 negative. 

 Washington, D. C. 2,255. IT. S. Fish Commission. 



d. fish-rearing establishments. 

 Stone & Hooper's trout nursery. 



A trough, or sluice-way, covered with lattice-work to admit the 

 light. The upper end, through which the water enters, is cov. 

 ered with wire cloth to prevent the escape of the fish, and the 

 outflow-spout at the lower end is similarly protected. Designed 

 by Stone & Hooper. 29,380. Collected by Livingston Stone. 



