147 



culty in obtaining specimens, I have not been able to make suffi- 

 ciently extensive researches to justify the demonstration of the mem- 

 brane as one of the proper tunics of the eye. There appears to be 

 a marsupium nigrum. The retina is very thick and strong, 



" The absorbent system is more perfect than in most Birds. Of 

 the thoracic ducts, the left is the largest. There are a femoral and 

 two axillary glands ; also an extra pair of bronchial glands more 

 than in the Loon or Gull. The coccygeal glands are 2 inches 3 

 lines long, and 9 lines broad. 



" There is a gular pouch, which measures in length 4 inches, 

 and in breadth 8 lines. 



" The tongue is set with cartilaginous /japzY^fa" directed backwards. 



" There is only one pair of salivary glands ; the submaxillary. 



" The structure and proportion of the lungs are the same as in 

 the Water Birds generally. The air-cells are few in number, and 

 small, and are filled by openings from the lungs, or from one cell to 

 another. They consist principally of the internal air-cells ; one above 

 the Jlirculum; and the axillary, abdominal, and femoral rows. 



" The liver, spleen, andi pancreas are large. 



" The oesophagus is straight, and 1 inch and 5 lines in width. It 

 is infundibuliforni, so that when it reaches the stomach it is 2 inches 

 and 4 lines wide : the injundibulum contained the beaks of cuttle- 

 fishes and gravel. 



*' The stomach is muscular, small, and glandular, and of the shape 

 of an egg. The duodenum \shroaA. at its origin, and at about .S-i- 

 inches from its commencement the biliary and pancreatic ducts enter. 

 The gall-bladder is 6 inches long and 2 inches in circumference ; it 

 is attached to the under side of the liver, and, gradually diminishing 

 in diameter, it passes over the stomach, and is inserted into the in- 

 testine, without the intervention of any duct. 



" The testes were large, as were the supra-renal glands and kid- 

 neys. 1 did not observe any difference from the usual structure and 

 proportions in any other parts. 



" The small intestines measured 22 feet 6 inches in length, and 

 were about the thickness of the little finger. There were attached 

 to them two cceca, each measuring about 1 inch 3 lines in length, 

 which were of the same diameter as the intestines. The great intes- 

 tines were somewhat larger than the small. The measurements of 

 the stomach and the intestines were as follows: 



Feet. Inches. Lines. 



Length of the oesophagus 10 



Breadth at the pharynx 1 6 



injiindibulum 2 4 



"Lengih oi the infiindibulum 10 



Breadth at the junction of the infundibulum with 



the stomach 6 



Length of the stomach 4 



Width of ditto 2 6 



