O N T H E T R O U T. 15 



I found that his food consisted besides Flies and 

 Caterpillars, of Larvae, Squillse (or fresh water 

 Shrimps) small Fish, young Crawfish, Spiders, 

 Millipedes, Earwigs, and the Water Beetle. I 

 never discovered Frogs, Snails, or Mice, but have 

 no doubt that other waters afford other fare even 

 " Sauces piquantes of fish hooks." 



A convenient method of examining the contents 

 of the stomach is to put the materials into a hair 

 sieve and pump clean water upon them ; when 

 parted and sufficiently clean the whole may be 

 put into a large cup, full of clean water, for 

 examination. 



THE GRAYLING 



Is a more elegantly formed fish than the Trout. 

 He has a smaller head and mouth, is broader 

 across the shoulders, and tapers off more rapidly 

 to the tail, which is more forked. The front 

 of the eye is elliptical, and the pupil much more 

 elongated than that of the Trout, the side towards 

 the nose being drawn out to an acute angle. 

 The opposite side is less acute. 



His back fin is very large. It has twenty-three 



conclusions, viz. : 1st. That the organ of taste in fishes, if taste they 

 have, " does not reside in the mouth." 2ndly. That the sensation of 

 taste, or some equivalent sensation, " is imparted to them by the ap- 

 paratus which had hitherto been considered as adapted to perceive the 

 emanations of odorate bodies." And Lastly, " That no real smell can 

 be perceived in water." 



