[ 3*6 ] 
bf the gillaroo trout is however more circum- 
fcribed than that of moft filh, better adapted for 
ffnall food, and endued with fufficient ftrength to 
break the {hells of fmall {hell fifh ; which will 
moft probably be beft done by having more than one 
in the ftomach at a time, and alfo by taking pretty 
large and fmooth ftones into the ftomach, which 
will anfwer the purpofe of breaking ; but not fo 
well that of grinding ; nor will they hurt the 
ftomach as they are fmooth, when fwallowed : 
but this ftomach can fcarcely poflefs any power of 
grinding, as the whole cavity is lined with a fine 
villous coat, the internal furface of which appears 
every where to be digeftive, and by no means fitted 
for maftication. 
The ftomach of the English trout is exadtlyof 
the fame fpecies with the gillaroo, but its coat 
is not fo thick by ~ («). How far this difference 
in thicknefs of ftomach is fufficient to make a 
diftindt fpecies,. or barely a variety of the fame* 
is only to be determined by experiment (b). 
The oefophagus in the trout is confiderably 
longer and fmaller than in many other clafles of 
fifb. 
The inteftines are fimilar to thole of the falmon, 
herring, fprat, &c. 
( a ) The Englifh trout (wallows (hell- fifh, and' alfo pretty- 
large fmooth. ftsnes,. which ferve as a kind of {hell-breaker. 
(b) Viz. Take fome Gjllaroo trout, male and female, and. 
tfranfplant them into.fome other water where there are no trout, 
to. (t.e. if they continue the fame. 
The: 
