[ ] 
with the appearances commonly obferved in fifhes. 
It is indeed membranous and mufcular, but its 
internal furface is not fo fmooth, white, and po- 
lifhed ; nor is it made up into large folds, or plaits, 
as we commonly find it in moft fifhes ; in fome 
indeed, more refembling a gut, than a ftomach: 
but the internal furface, in the ftomach of the 
Gillaroo trout, is rough, and over-fpread with 
villi, which are fo ftrong, they may be eafily feen 
with the naked eye, and which I have never ob- 
ferved in the ftomach of any other fifh. 
Upon the whole, we may venture to conclude, 
that there are fbme Angularities, in the ftrudture of 
the flomach, which may perhaps be peculiar to 
the Gillaroo trout. 
If, in the beft manner I have been able to pre- 
pare this ftomach, you fhould think it worth pre- 
ferving, I hope it may poffefs a corner in the 
Mufeum of the Royal Society. I am. 
SIR, 
with great refpeft. 
Your moft obedient. 
humble fervant. 
Rathbone-place, 
i£>Jan. 1774- 
HENRY WATSON. 
