THE NKW ART OF BREEDING FISH. 19 



the directions before given as to artificial incuba- 

 tion. 



If any of the eggs have a different appearance 

 from that before described as fitting them for incuba- 

 tion they must be thrown away, and the cleaner the 

 eggs are the better will be the success of the experi- 

 ment. The sterile and spoiled e^s become white 

 and opaque like the white of a hen's egg boiled, and 

 if broken yield a milky fluid. 



Mr. Gehin tried the experiment of drying in the 

 sun eggs spread on paper, and then placing them in 

 a hatching box. With some he succeeded. Now 

 that Gehin and Eemy have opened the way, we may 

 look for the results of various experiments that will 

 doubtless be made by others, in the modes of pre- 

 serving eggs, crossing the breeds of different species 

 offish, and kindred matters. 



UTILIZATION OF FISHING AT TIMES PROHIBITED BY 

 LAW. 



Trout-fishing is prohibited during spawning time, 

 that is during November and December, because the 

 fish coming then together in shoals can so easily be 

 taken and the work of reproduction prevented. But 

 fishermen, stimulated by large profits and lessened 

 toil, brave the law and destroy in the germ millions 

 on millions of fish. 



To these fishermen Mr. Gehin gives this advice : 

 they should take with them a little pot made of zinc ; 



