NEW AND IMPROVED DEVICES FOR FISH CULTURISTS. 



By ALFRED E. FULLER, 

 U. S. Fisheries Station, Northvillc, Mich. 



ARTIFICIAL BASS NEST. 

 [Exhibit I. Fig. i, pi. civ.] 



• This form of bass nest, like others in use, consists primarily of a container 

 for the gravel, constituting the nest proper, and a shield to furnish the 

 seclusion required by the nesting fish. Both container and shield, however, 

 are of distinctive design, and the shield, which is detachable, is provided with 

 a waterproof record holder and indicator projecting above the water. 



The nest proper is an iron hoop 2 feet in diameter, made of i >^-inch by 

 J^-inch band iron. This hoop, placed in the pond and filled with gravel, holds 

 the latter within its circumference without the necessity of any bottom and 

 may be left in position permanently. Riveted at each of 3 quartering points 

 on the outside of the hoop is an iron socket or slot, of size to accommodate a 

 standard i inch wide and yi inch thick. By means of these slots the removable 

 shield is adjusted to the hoop. 



The shield, 2 feet high and semicircular to fit one side of the hoop, is made 

 of ordinary galvanized sheet iron riveted to three iron standards. The standards, 

 which are i inch wide by yi inch thick , extend 2 inches below the sheet of iron 

 they support, and are pointed at the lower end for ready adjustment to the 

 sockets in the hoop. The two end standards are 26 inches in height and flush 

 with the top edge of the shield. The middle standard is higher, projecting above 

 the shield to hold the indicator and record case. The height of the projection is 

 determined by the depth of the water in which the nest is used, the indicator to 

 be always visible above the surface of the pond. The shield and container are 

 coated with paint. 



The record holder consists of a waterproof case to contain cards or small 

 sheets of paper and has a number and an indicator on its face. The case is 

 made of 2 rectangular pieces of thin sheet metal, preferably copper, 2}i by 

 5 inches, with rolled edges to permit one side of the case to slide upon the 

 other. Into the back are slipped the cards or sheets of paper containing detailed 



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