86 FISH HATCHING. 



should fall into No. 2, and so on, like water 

 falling down (only at the ends) from one step 

 of a staircase on to the step below it. The 

 box shx)uld be a little inclined to favour the 

 flow of water, and the water should have a fall 

 from the end of one box into the head of 

 another of a few inches. You must take 

 care so to level and arrange the boxes as 

 that, should the stream from above fail, some 

 water should always be left to cover the 

 eggs. If you have not convenience for 

 placing the boxes in a parallel row, you can 

 place them side by side, at right angles to 

 the stream whence the water is derived, 

 having a hatchway for each. 



Your boxes being all ready for putting 

 down into the stream, get some gravel, 

 river gravel will not do, but dig it out of a 



