1230 FISHERIES OF THE UNITED STATES. [76] 



Though-net. 



A semicircular galvanized -iron frame covered with cloth, and pro- 

 vided with a wooden handle, for removing young salmon and 

 other smaller fish from the hatching and feeding troughs. Pre- 

 sented by T. B. Ferguson, Baltimore, Md. U. S. Fish Commis- 

 sion. 



Cleaning-net. 



A piece of fine-mesh netting stretched upon a rectangular wire 

 frame and provided with a wooden handle. Frame, 5£ inches 

 long and 4£ inches wide ; handle, 13 inches long. In general 

 use. 39,114. U. S. Fish Commission. 



Reflector lantern. 



A patent tubular lantern, provided with a movable reflector of tin. 

 Frame of lantern, 15. inches high; diameter of reflector, 16 

 inches. 39,118. U. S. Fish Commission. This lantern is ex- 

 tensively used by the United States Fish Commission when 

 collecting and impregnating eggs of the shad and other species 

 at the fishing shores, and from the boats of the gillnetters at 

 night. It is occasionally employed at the hatchery when manip- 

 ulating the eggs. The reflector is movable and can be taken 

 off when not needed. It is provided with grooves at the sides, 

 to correspond with the lantern tubes, which hold it in position. 



Water-wheel. 



Photograph of the wheel which supplies the U. S. salmon-breeding 

 station on the McCloud River with water. Also, of the dam 

 which furnishes the current for turning the wheel. Size, 8 by 

 10 inches. Baird, Cal., 1882. (680) 2,157. IT. S. Fish Com- 

 mission. 



Water-wheel. 



Photograph of the wheel which supplies the U. S. salmon -breeding 

 station on the McCloud River with water. Also, of the dam 

 which furnishes the current for turning the wheel. Size, 30 by 

 40 inches. Enlarged by electric light from an 8 by 10 nega- 

 tive. Baird, Cal., 1882. (680) 2,157. U. S. Fish Commission. 



Egg refrigerator. 



Drawing of a prospective refrigerator building, to be constructed 

 at the Northville hatchery of the U. S. Fish Commission, for 

 storing eggs of the whitefish to retard their development for 

 several months, or until such time as room can be made for 

 them in the hatching house. Size, 30 by 40 inches. Washing- 

 ton, D. C, 1882. Henry W. Elliott. 



