66 DOMESTICATED TROUT. 



come broken they can be readily removed and others 

 substituted. Each box will hatch from one thousand 

 to fifteen hundred eggs. 



Prices of Coste Hatching Trays. 



Single trays $4.00 



One dozen trays 45 .00 



Fifty or over, at the rate of 3 50 



Extra glass tubes (each) .05 



" " " per pound .75 



FLIGHT OF TRAYS WITH STAND. 



This is a neat and convenient form when several 

 trays are required. 



The stands are made of the best seasoned white- 

 pine, neatly framed together. 



Prices. 



Flight of five trays and stand $21.00 



three " " 13.50 



Stands for five trays 2.50 



" three " . . . . . . . 2.00* 



There is another form of grilles used, which has 

 stood the test of experience very well. It consists of 

 very narrow strips of window-glass, laid side by side 

 in the hatching-box, an inch or two from the bottom, 

 and closely enough to keep the eggs from falling be- 

 tween them, but wide enough apart to allow the 

 hatched fish to fall through. Each alternate strip is 



* Dr. Slack's Catalogue of fishes, and apparatus used in fish 

 culture, pp. 4, 5. 



