THE GOLDFISH AND ITS CULTURE. 91 



fly makes its appearance through the back of the grub, rising upon 

 its wings into the air as soon as they are unfolded and dry. 



The eggs are also produced twice in a season, the grubs from the 

 last deposit, living in the mud during the winter, and produce in the 

 early spring the first dragon flies of the season. 



Their natural enemies are the frog and the water-spider. The 

 latter, small as it is, compared with their own size, is, nevertheless a 

 powerful antagonist, attacking them when in the act of depositing 

 their eggs. The attack is made upon the eye, the largest dragon-fly 

 thus being easily overpowered by its small but intelligent enemy. 



How strange it is that just those animals with which man has the 

 least sympathy are among his best friends ! Such are the toad and 

 the spider! 



