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 nigriim. 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 Guli. The coccyg«al glands are 2 inches 3 

 lines long, and 9 lines broad. 



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

 and in brėadth 8 lines. 



" The tongue is set with cariiiaginons papillce directed backwards. 



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



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

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

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

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

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



" The liver, spleen, and pancreas are large. 



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

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

 and 4t lines wide : the infundibulum contained the beaks of cuttle- 

 fishes and gravel, 



" The stomach is muscular, small, and glandular, and of the shape 

 of an egg. The duodenum is broad at its origin, and at about 84- 

 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 nnder 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 ccBca, each measuring about 1 inch 3 lines in length, 

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

 tines were somewhat larger than the small. The roeasurements of 

 the stomach and the intestines were as follows: 



Feet. Tnches. Lines. 



Length of the a?so/3^a^«s O 10 O 



Breadth at the pharynx O 1 6 



infundibulum O 2 4 



"Lengih. oi ihe infundibulum O 10 O 



Breadth at the junction of the infundibulum with 



the stomach O 6 O 



Length of the stomach O 4 O 



Width of ditto O 2 6 



