92 FISH HATCHING. 



Smee are 20 inches long, 4J deep, and 6 

 wide, which can be placed one above the 

 other, so that the water can fall either by 

 means of lips over the sides, or over the ends, 

 like my boxes in the Field" Office. These 

 boxes may be made either of zinc or earthen- 

 ware.* The water can be caused to flow 

 from a cistern, and will run down through as 

 many boxes as you please to place one 

 above the other, either side to side, or else 

 end to end. These boxes must contain either 

 a series of glass rods, upon which the eggs 

 can sit, and which is a neat and clean way 

 of hatching them, or can be filled with the 

 boiled half-inch gravel, so that two inches of 



* By next September or October I shall be able to tell the 

 reader where these may be procured, or any how can give him 

 a model. 



