46 PRACTICAL TROUT CULTURK. 



twenty inches in length, six inches in width, and 

 three in depth ; at each corner is soldered, one and 

 a half inches from the top, a triangular piece of 

 galvanized iron, upon which the grille or frame 

 rests ; a spout is placed near one corner, and a 

 tube for drawing out the contents, when necessary, 

 is attached to one end. This, when the tray is in 

 use, is closed with a cork. 



Fio. 6. 



Fig. 6 represents a section of the metallic por- 

 tion of the tray, A the spout, B, B, B, B the triangu- 

 lar corner-pieces upon which the grille rests, and 

 c the drainage tube. The grille (Fig. 6, B, B,) 

 is composed of glass tubes, from T 3 y to ^ of an 

 inch in diameter, inclostd in a frame of black wal- 

 nut, measuring, inside, exactly eighteen and a 

 half by four and a half inches. This exact length 

 was chosen as it will include, on an average, one 

 hundred eggs, and thus the amount taken may 

 be readily estimated. The width was chosen, 

 after consultation with a tinman, that there need 

 be no waste in cutting the material a point of no 

 small pecuniary importance, when large numbers 

 are to be manufactured. The tubes are lightly yet 

 firmly bound together by copper wire, which 



