8 FISH HATCHING. 



your land game. You allow the ivater 

 vermin to run riot ; there are no trajDS set 

 for them ; they have their full swing. 



Among animals living on land, practical 

 observation will tell us that their rate of 

 increase is, compared to the increase of fish, 

 but very small. In fact, we find it especially 

 recorded that the waters brought forth 

 ahundanilij. 



I will proceed to show you that this is the 

 fact. 



By way of contrast, we shall first notice 

 that the highest oviparous animals, the birds, 

 produce during the season but a small num- 

 ber of eggs compared to fish: thus, a good 

 barn-door fowFs j^roduce in one year is about 

 120 eggs. I^ot trusting to calculations that 

 have had the run of Natural History books 



