FOR PLEASURE AND PROFIT. 



133 



the tray, by means of which the trays cajn be easily handled, 

 and, moreover, they materially assist in stiffening the* tray. 

 It will at once bo seen that this shape of tray combines, in a 

 wonderfully simple manner, aill the best qualities essential. 

 It presents ai slanting surface to the flow of water, and there 

 are no corners for thi3 alevins (later on) to 1 get jammed into. 

 The sides may be made of parforated zinc ailso, but this 1 is not 

 necessary, and, moreover, the wood sides enable the tray to be 

 " floated " in the washing box, when the egg shells agre 

 being cleared out at hatching time, or on other occasions when 

 it is necessary to make use of the washing box. Fig. 36 



Fiq.SS FlQ.56. 



Fig. 56. A Hatching Tray. 

 Fisr. 36.~End View of a Hatching Tray. 



is an end view of the tray. I do not recommend these trays 

 being made of a large size, but a) box of th dimensions 

 already given may be made to hold eight only, instead of ten, 

 as shown in, the drawings. 



This design, of traiy originated with the German, piscicultur- 

 ists. The photos. I give were taken at the Earl of Denbigh's 

 hatchery at Holywell, North Wales. 



Tfhe hatchery is now fitted, with the exception of a. washing 

 box, which is a most useful adjunct. Ani empty hatching 

 box may be used for the purpose ; but, should a,ll the hatch- 

 ing room be required, then ai plain box with a big plug and 

 outlet should be fitted up in some convenient part of the 

 hatchery. If specially made, this washing box should be 

 deeper than an ordinary hatching botx; 1ft. is not too deep. 



Having ascertained that everything connected with the 

 water supply and the apparatus I have just described is in per- 



