REARING THE YOUNG FRY. 1 67 



otherwise it would soon become so foul as to be 



c6 bem fiaftcfien artgefcradjten OtiStyrdjen erreidjt, burd) weldjeS bai aigefjenbe 

 SEBaffer erfe&t tterben farm. 



9tufjen am Safldjen fceftnbet fid) eine £eMftaf>t>e, ireldje ftd> burd) bie 

 SBeroegung be3 SEBafferrabdjenS »on Sett ju Sett offner, unb fliefjt baJet mil 

 bent SEBaffer ettoaS gutter au«, Start regulirt bag Deffnett ber illajjpe, 



Self-working Machine for feeding Trout. 



