330 NATATORES. 



the stomach, and makes the usual turn, but not very long. The oeso- 

 phagus, stomach, and passing out of the duodenum are just like colon, 

 caecum, and passing in of ileum ; but they are folded upon one another 

 through their whole length ; for the beginning of the duodenum joins 

 near the termination of the ileum which is behind it ; and the ileum 

 passes along with the duodenum then with the jejunum to the bend 

 that the two make. The part of the fold that is beyond the duodenum 

 is twisted upon itself into a spiral form ; the other intestines are loose. 

 The caeca are very short. The rectum is not above an inch long ; and 

 has a swell at the anus. There is a bag [bursa Fabricii] above the 

 anus. 



The spleen is about an inch long, is small, and adheres to the upper 

 end of one of the pancreases, next to the first turn of the duodenum. 

 The hepatic and cystic ducts enter that gut about an inch from one 

 another, the hepatic first, the cystic at the last bend of the duodenum, 

 or its termination. The pancreatic duct enters between both, but 

 nearer the cystic. 



The testes are very small, oblong, mostly black, but whitish at the 

 lower end : there are some orifices above where the penis should be 

 situated. 



This description is taken from two gulls, viz. the above-mentioned 

 [Lams triclactylus], and another something larger, and of an ash-grey, 

 with a yellowish bill and legs [Lams canus, Linn. 1 ]. 



The Great Speckled Diver, or Loon of Pennant [Colymbus 

 glacialis, Linn.]. 



It has a stomachic gizzard [i. e. having side-tendons, but with thin 

 coats like an ordinary stomach]. The duodenum is as usual. The 

 jejunum passes pretty high up, to the lungs, then down to the loins, 

 then up the middle of the abdomen, to the liver again, making one 

 complete oval sweep ; within which it passes, making three slight folds 

 on itself, or what may be called angular attachments to the mesentery ; 

 from thence it passes to the left at the upper part, making there a few 

 convolutions, then goes down the left side in the loins, forming the 

 rectum. The caeca arise about 2 inches from the anus, and are about 3 

 inches long. There is a large cavity at the termination of the rectum. 

 The anus is continued above an inch under the tail beyond the pelvis. 

 In the stomach were stones and bones of fish. 



The testicles were not larger than pins' heads ; but this was killed 

 in winter. The circumstance most remarkable in this bird is its tibia, 



1 [The skull of this bird is No. 1232, Hunt. Osteol. Series.] 



