96 U. S. BUREAU OF FISHERIES. 



If desired, the bottom tray 3 may be provided near its upper edge 

 with a buoyant member ^^, so that it will float and may be towed be- 

 hind a boat during the collection of the fish to be transported. Such 

 an arrangement is shown by G (fig. 4). 



G also shows a desirable construction of bottom tray 3 when the 

 container is to be used as a minnow bucket or fisherman's live-bait 

 pail. Float 22 is shown secured to the inside of bottom tray 3 near 

 its upper edge. The cover 23^ having a hinged lid ^4, may be added. 

 This device may be secured to a boat or other convenient object by 

 means of a cord attached to rings 25. Furthermore, it may be placed 

 within the outer receptacle 1 and will then perform the functions of 

 the simple bottom tray 3 heretofore described, in addition to its 

 function as a floating pail. 



This pail as adopted by the bureau, although only 12 inches high 

 and 13|- inches in diameter, carries as many fish as are commonly 

 placed in the regulation 10-gallon milk can. As it is possible to 

 place five of these pails in the space occupied by three milk cans, the 

 carrying capacity of the cars has been increased 66§ per cent. The 

 device is especially useful in shipping fish for considerable distances 

 without an attendant. It also aft'ords a practical means of transport- 

 ing fish to the headwaters of streams that have heretofore been 

 neglected on account of their inaccessibility. 



AUTOMATIC SIPHON AND IMPROVED TRAY FOR ICE. 



The automatic siphon for removing pollution from fish cans and 

 maintaining a water level, thereby facilitating the changing of water 

 on fish, and the improved type of tray for ice were designed bj^ E. C. 

 Fearnow and patented under the act of March 3, 1883 (22 Stat. L. 

 625) . (See fig. 5.) The object of the invention is, primarily, to pro- 

 vide a simple and efficient means for removing sediment and pollu- 

 tion from the container, and, secondarily, to provide means for main- 

 taining the water level at a substantially fixed point. These results 

 are accomplished by combining with a tank or a container of any de- 

 sired type a siphon so arranged that by tilting the container, or by 

 the addition of water to the container, the siphon may be submerged 

 and caused to operate to remove sediment and polluting matter and 

 to reduce the quantity of water within the container to a predeter- 

 mined amount. 



The device illustrated by A (fig. 5) consists of the container i, 

 which, in this instance, resembles an ordinary 10-gallon milk can. 

 This shape has been extensively used by hatcheries for the shipment 

 of live fish, because water is not likely to slop out of it unless it is 

 filled too full. The bottom 2 of the container is shown dished down- 

 wardly somewhat and is connected with the body of the container a 

 short distance above the lower edge, as at 3, so that a space will be 

 preserved between the bottom and any surface upon which the con- 

 tainer may be placed. Within the container is a siphon 4, shown as 

 a pipe, principally in the shape of an inverted U. The top 5 of the 

 siphon is located at the highest point to which it is desired to per- 

 mit the water within the container to rise. The intake legs 6 of the 

 siphon passes through the bottom of the container and connects with 



