1210 FISHERIES OF THE UNITED STATES, [56] 



Holton hatching-box — Continued. 



Just above this is a rectangular piece of tin, against which the 

 water impinges as it enters, thus being deflected toward the 

 sides. The box is provided with eleven trays of wire cloth, 

 each separated from the other by the wooden frame to which 

 it is attached. Eighteen inches square and 12 inches deep; 

 outside measurement, including base and waste trough, 22 

 inches square and 20 inches deep. Patented by Marcellus G. 

 Holton, Rochester, IS. Y., March 18, 1873. U. S. Fish Com- 

 mission. 57,159. The water enters the buckets through a tube 

 which extends from the top around the side to the inflow open- 

 ing at the bottom center, from which it passes up through the 

 trays of eggs into a trough at the top, which conducts it to the 

 outflow spout. This is one of the first forms of apparatus by 

 which an upward current of water is utilized, and the inventor 

 claims for it many advantages over other systems. These 

 boxes are often so arranged that the water passes through a 

 series of twenty or more, each box being a trifle lower than the 

 preceding one, and the outflow of the first communicating with 

 the feed-pipe of the second. 



Stone's salmon-basket. 



This apparatus consists of a Williamson trough provided with wire 

 baskets, suspended from frames, for holding the eggs. De- 

 signed by Livingston Stone, Charleston, N. H., 1874. Living- 

 ston Stone. 26,956. In this apparatus a double partition sep- 

 arates each compartment, the first, or upper one, extending to 

 the bottom, while the second one is placed a little way above 

 it. The water falls over the first partition and passes under 

 the second into the compartment, then upward through the 

 basket of eggs and over between the next partitions. This was 

 one of the first forms of apparatus for bulk hatching in the 

 United States, and, according to Mr. Stone, the eggs were often 

 placed 12 to 15 layers deep without injury. 



Ferguson hatching-jar. 



A cylindical jar of glass, with a contraction near the base, which 

 serves" as a support to the 7 wire- cloth egg-trays which it con- 

 tains. It has two circular openings on opposite sides; one at 

 the bottom for admitting the water, which passes upward 

 through the eggs and out through the second opening, which is 

 situated at the top. Height, 12 inches; diameter, 8 inches. 

 Invented by T. B. Ferguson in 1876. U. S. Fish Commission. 

 26,998. For economy of water, the outflow opening of one jar 

 is connected with the inflow pipe of the next by means of rub- 

 ber tubing. By this means the water passes through an entire 



