Other Fresh-Water Fishes With Free Eggs. 203 



it ! Here is a way to hatch fish eggs in bulk and keep 

 them free from fungus ; get a patent on it." 



I do not look favorably on patent rights, and espe- 

 cially in fishculture, where we all use each other's 



The Chase Jar. 



brains with more or less credit; some never give any. 

 From this sprang the "Chase" jar, which was pat- 

 ented, and also the McDonald jar. 



The Chase Jar is round-bottomed, with an open 

 top, which is surmounted by a metal rim having a lip 

 for an overflow. The water is conveyed to the bot- 

 tom of the jar by a heavy glass tube having a foot 



