996 BULLETIN OF THE BUREAU OF FISHERIES. 



FISH RETAINER. 

 [Exhibit 4. Fig. 4, pi. cv.] 



This article is a convenient means of temporarily confining fish awaiting 

 shipment. It is made of ordinary galvanized iron, and is in effect a 

 taller and slenderer form of the collecting tub described in exhibit 3, with 

 the addition of a combined cover and bail. It is 10 inches in diameter and 

 20 inches high, with a 2-inch flaring rim and with two perforated strips of 

 tin inserted opposite each other in the sides. The perforated inserts are 6 inches 

 wide by 14 inches in height, reaching from the lower edge of the rim to within 

 4 inches of the bottom of the receptacle. A stiff wire bail, to which the cover 

 is fastened, is attached on the perforated sides, and the receptacle is painted. 



When in use this retainer is set in a wooden float to prevent its sinking. 

 Such floats may be constructed any length, to accommodate any number of 

 retainers, but sections 26 inches wide and 7 feet long, which will accommodate 

 ID retainers, are found to be most convenient. The apparatus is placed in 

 fresh or running water, and the fish to be carried in one transportation can are 

 placed in one retainer. In emptying the retainer its contents should be poured 

 out over the solid sides instead of the perforated, to prevent injury to the fish. 



This device has the advantage of allowing shipments of fish to be prepared in 

 advance of the time of departure, as a free circulation of water is permitted at 

 all times and the fish can be held any reasonable number of days. It obviates 

 extra handling of the fish, which is to be avoided as much as possible, and also 

 enables one man to prepare the shipment without assistance, which is of great 

 convenience for night departures. 



FISH ATTENDANT'S OUTFIT. 

 [Exhibit 5. Fig. 5, pi. cv.] 



This outfit comprises an aerating device and a combination ice pick and 

 net, for use in the transportation of fish. The aerator consists of a cylindrical 

 screen made of perforated zinc or tin, and a perforated funnel-shaped plunger 

 with long handle. The screen is 6% inches in diameter, 21 inches high, with a 

 2-inch slightly flaring collar at the top, has a perforated bottom, and is fitted 

 with a wire bail. Two heavy wires, crossing each other at right angles, are 

 soldered 2 inches from the bottom to prevent the plunger from striking the 

 latter. The slender dimensions of the screen permit it to be inserted into the 

 ordinary transportation can. 



The plunger may be made of an ordinary tin funnel of 6 inches mouth 

 diameter, a shallow tin pan of the same diameter, and a X'i^^h rod bent to 

 form a loop at one end. The funnel is perforated with nail holes, as is also the 

 bottom of the pan, and the latter, inverted, is soldered over the mouth of the 



