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mach, and the right gastric, which goes on the pylorus and superior 

 part of the stomach, anastomosing with the superior pyloric and 

 inferior coronary arteries. The splenic gives off a small artery dis- 

 tributed on the cardiac portion of the stomach, and some vasa 

 brevia, which are distributed to the left portion of the stomach. 



«' Not wishing to mutilate the skeleton, 1 did not exaniine the 

 brain J but from the number, size, and situation of the Jbramina in 

 the base, and the whole contour of the cranium, the brain must be 

 presumed to be very nearly similar in proportional quantity and 

 structure to those of the Loon and Gull. 



" The nerves are distributed as usual. The brachial plexus is 

 composed of the last cervical and first two dorsal nerves, and of a 

 filament from the last spinal nerve but one in the cervical region. 

 The sciatic is composed of the five superior or anterior pairs of pel- 

 vic nerves. 



" The nose is organised similarly as in others of this class. The 

 cartilaginous lamina' of the turbinated bone are concentric, and 

 thirteen in number. 



" The eye has six muscles, which arise and are attached as usual. 

 The lachrymal gland is placed at the postero-superior part of the 

 orbit, and is large in proportion to the globe of the ej'e. It sends 

 off several ducts; I think seven ; but the part being much injured, I 

 found it impossible to ascertain their precise number and origin : 

 one, however, opened immediately under the anterior part of the 

 membrana nictitans. Two other ducts also opened below this mem- 

 brane, passing from the Harderian gland, which was situated at the 

 inferior part of the orbit. The nasal gland occupied its usual situ- 

 ation, partly in the anterior and superior portion of the orbit, and 

 partly in the Jossa of the frontal bone: its duct passed forwards 

 under the bridge of bone, and then bifurcated, one division of it end- 

 ing on the cartilaginous lamince of the ossa turbinata, and the other 

 going forwards^ and lying on the bone : I was not able to trace it 

 further. 



" The membrana nictitans is large and strong : it is moved by a 

 pyramidalis and a quadratus muscle. 



"The globe of the eye is large, as compared with the cranium. 

 The sclerotic is less osseous than I have yet found it in any Bird. 

 The optic nerve enters at the postero-inferior part of the sclerotic. 

 The cornea is small, owing to the large space occupied by the scle- 

 rotic. Under the cornea lies the membrana aquatica, consisting of a 

 thin membrane, adhering to the edge of the iris. This membrane 

 was first observed, together with the tunica celhdaris, by Mr.Blackett, 

 in 1802, in the eye of the Cat, the preparation of which was sold in 

 the first part of Mr. Brookes's Museum. The tunica cellularis in this 

 animal is rather pulpy, but, on the application oi liquor potassce , 

 it dissolved, and displayed a cellular structure. Mr. Blackett de- 

 monstrated this membrane to me in 1832, since which time 1 have 

 observed it in all the eyes I have examined; but, owing to the diffi- 



