EXPERIMENTS IN RAISING BLACK BASS BY TAKING 



THE NESTS AWAY FROM THE PARENTS AND 



HATCHING THE EGGS IN TROUGHS 



15Y i':i)\v.\i;i) A. I'.iiMii:. madison, wjs. 



The facts that I may j-cjtoii ai'c siniph' these: A year or so 

 ago we lost a very uiee hit of lilack bass eggs in our hatehery at 

 Minocqua, owing to a siKhleii fall in temperature, and chill of 

 the water. The foreniaii of tlie hatehery said to me, "'1 wonder 

 if it woiihl not 1)0 possihli' lo take tlie eggs from tlie nests.'' 1 

 asked him to make some e\])erinients on the matter this year. 

 He did so as far as he was al)le, but had so many fry to take 

 care of that he was al)h' to do only a small part of that work 

 wliieh he and I had planned together, and therefore the t'xperi- 

 ment cannot be reported on. 



The only thing that can be said is that it is perfectly |)o-- 

 sible to remove the eggs when first laid from nests and to hatcli 

 tliem on ti'ont screens, furnishing healthy fry; but the experi- 

 ments liavi' not yet gone far enough to warrant any report on 

 the matter at present. 



(^I'KSTIOX BOX. 



Tlie first question is as follows: In discussion before the 

 society last year, .A[r. Lydell states that he has been reducing 

 the nundier of adults to the pond ever since he has been engaged 

 in the ])ropagation of iish and gets better results all the time. 

 Does ho mean a larger nundjer of eggs per fish, or is it better re- 

 sults from the fry allowed the lilx'rty of the pond? The poin^: 

 is this: Do increased nund)ers of adults in the spawning pond 

 decrt'ase the ])roduction of fry, providing always three hundred 

 square feet is allowed to the nest, as advocated in ^Michigan fish 

 report for 1903-4? 



'fbere are a nundier of questions here. 



Mr. Clark: 1 would like to inquire wlio it is from — a mem- 

 ber of this societv or not? 



