C 122 3 
The internal coat, has a rough, but not rugous 
furface. It is fpongy and perhaps glandular, with 
a kind of honey-comb texture, and ftrong •billi, a 
little fknilar to the internal appearance of the 
gall-bladder in the human fubject ; and no doubt 
would make an elegant figure, was it well in- 
jected. This, sir, is the molt, that I am at prefent 
able to obferve upon the ftruCture of this v/fcus. 
But, as the Itomach of the Gillaroo trout is 
fuppofed to perform the office of a gizzard, it 
may be neceffary to examine a little, how far they 
agree. 
The gizzard, in birds of the gallinaceous kind, 
is compofed of large mafles of flefh and tendon ; 
between which lies the ftomach, a ftrong, denfe, 
cartilaginous, or horny bag, furnifhed with emi- 
nent ruga, and deep furrows ; but we have none 
of thefe appearances in the ftomach of the Gil- 
laroo trout ; it does not fhew the lead re- 
femblance, nor can I think it will bear any com. 
parifon, with the gizzard in fowls ; nor is it at all 
conclufive, that the ftomach of this trout performs 
the office of a gizzard, becaufe feveral fmall fnails 
were found within itj for might we not as well 
conclude, that the caeca annexed to the duodenum , 
and which are, in this fifh, very numerous, and 
loaded with the fame little (hells, do the offices 
of fo many gizzards ? But we know that thefe 
caeca are glandular pouches, and do the office of 
a pancreas. 
If the ftomach of the Gillaroo trout does not 
appear, to correfpond with the ftrufture of the giz- 
zard in fowls, neither does it agree, in every refpeft, 
with 
2 
