4 FISH HATCHING. 



artificial means, and why it is so necessary 

 so to do, I would beg to examine first, the 

 various causes of their scarcity; and, secondly, 

 to point out the means whereby these causes 

 may be avoided, so that your painstaking 

 and care shall be rewarded fourfold. 



LAND AND WATER COMPARED. 



If you will for a moment observe this 

 wooden globe as I turn it round, you will 

 at once perceive what a vast preponderance 

 the water has over the dry land ; in fact, 

 we may fairly say that three-fourths of 

 the whole earth is water. We are for the 

 most part fully cognisant of the inhabitants 

 of the land we have subjugated those which 

 are serviceable either for food or for labour 



