THE NEW AET OF BREEDING FISH. 11 



tably superior even to that of nature herself. This 

 may be deemed too bold an assertion, but a mo- 

 ment's reflection will prove its truth. 



Does not man sow his entire field with the single 

 sort of grain he wishes to cultivate ? Where in its 

 natural state will we find a field producing one only 

 kind of grain ? Do we ever find in a state of na- 

 ture, and within equally circumscribed limits, the 

 same number of any single species of animal, as in 

 our stables, sheepfolds, or barnyards .'' What, then, 

 is there to hinder us from stocking bountifully our 

 streams with fish, by aiding the process of hatching, 

 and protecting the young from destruction by their 

 innumerable enemies ? 



How these objects are attained by Mr. Grehin we 

 shall now proceed to show, regretting to add that 

 his partner, Mr. Eemy, is no longer able to co-operate 

 with him, owing to a disease — the result of exposure 

 during the experiments — which bids defiance to doc- 

 tors' skill and incapacitates him from labor. 



AKTIFICIAL FECUNDATION. 



We will now proceed to explain the processes of 

 Mr. Gehin, as exhibited at Sassenage. His experi- 

 ments there were made with trout of the weight of 

 250 to 300 grammes, preserved alive in a reservoir. 



Mr. Grehin takes a female trout when she is ready 

 to spawn, holding her by the back with his left 



