18 On the Callorynclius Australis, 
large, so that the conversion of foreign matter into the 
likeness of the Chimera is a process of great energy. 
Along the pyloric extremity of the stomach there is a 
zone of glandular follicles, of about an inch in depth, 
and large enough to admit a crow-quill; the secretion 
is of a dark brown mucous character, and appears to be 
a special secretory organ, the analogue of which I am 
not aware exists in any other animal. The pancreas has 
two ducts ; one uniting with the gall-duct, and the other 
opening separately. 
In the Chimera these secretions are poured imme¬ 
diately into the stomach : in truth, the stomach performs 
the office of the whole alimentary canal of other 
animals. 
Osseous system .—The head of the Chimera is of an 
osteo-cartilaginous character; the whole is formed of 
one consolidated piece. The cranial cavity is remarkably 
small, and separated from the orbits by a dense dura 
mater only. The proboscis is supported by two car¬ 
tilages, which I consider the analogues of the superior 
maxillary bones. The orbits are large, and open ante¬ 
riorly, and are separated from the brain merely by a 
membrane. 
The face in front of the orbits is compressed, and 
gives origin to large masseter muscles for the movement 
of the lower jaw. 
The base of the skull is formed of one consolidated 
piece, which gives support to the branchial arches, and 
the pharyngeal bones. On the summit of the head, and 
in front of the orbits, is situate a singular organ, which 
forms a kind of forceps : the upper or moveable piece 
is attached to the front of the head, betwixt the orbits, 
by a ligament: it is slightly arched in its form, with its 
concavity downwards ; its extremity is armed with a 
great many recurved spines or teeth, which are applied 
