i88 THE TROUT 



to leave the tray they have the distinct advantage 

 of beginning their feeding life on a floor which has 

 been thoroughly cleaned immediately beforehand. 



The nursery in which the alevins now find them- 

 selves is certainly more useful than ornamental. On 

 referring to the illustration (fig. 8) you will see that 

 the floor and side walls of the room are formed by the 

 charred bottom and sides of the hatching-box. The 

 wall at the upper end is the breakwater, over the top 

 of which the water enters, while the lower wall con- 

 sists of the sloping screen of perforated zinc. For 

 their ceiling the alevins now have the lids of the box 

 instead of the blue calico cover of the tray which they 

 have just vacated. Their new apartment is of course 

 more spacious than the tray ; but there is the same 

 conspicuous absence of furniture. 



REARING THE FRY 



When once the alevins have begun to feed, the 

 process of absorption of the yolk sac will be rapidly 

 completed. Their digestive organs are now developed, 

 and each tiny creature has become a fully formed fish. 

 The period of alevinage has passed, and the little 

 creatures are now entitled to be called by the more 

 familiar name of ' fry.' Your labours have ceased to 



