APPENDIX I. 



259 



were killed, the bare spots healed over, and the trout got 

 well. Others were tried ; some died and some Uved. 



© 



Q 



Q> 



^^^^^^r^^^ 



Q 



© 



a 



a Microscopic parasites which attack trout fry : b Water insects supposed 

 to be destructive to trout eggs. 



From all which circumstances we may, T think, draw the 

 following: conclusions : That it is the worm, and not the 



