SUS SCROFA. ] 19 



seems half horny or gristly, of a very good white l . It [the oesophagus] 

 has a capsule nearly its whole length in the thorax. 



In the intestines there is a honeycombed rugosity on the inner sur- 

 face, even when pretty much stretched. The vena azygos is on the left 

 side. The liver is neither a divided one, nor is it one lobe: on its 

 surface it is lined or divided into partitions. There are a great many 

 valves in the coronary vein. 



Loose Notes on a Boar. 



The boar is long in copulation, which is contrary to the opinion that 

 animals without the bags [vesiculse seminales] only are long in copu- 

 lation. 



The matter secreted in the vesiculae seminales is a whitish fluid, 

 like thin milk. The ducts of the vesiculse seminales do not in the 

 smallest degree communicate with the vasa deferentia. The prostate is 

 very small. The foramen caecum 2 is long, passing along the basis of the 

 bladder, and opens by two distinct orifices by the openings of the vasa 

 deferentia. 



Immediately under the skin, especially on the belly, there is a little 

 flattened body at the root of each hair, of a kind of pyramidal figure ; 

 the small end towards the hair : this end pierces the skin and seems to 

 cover the root of the hair, while the other end is only attached to the 

 cellular membrane which unites the skin to the muscles, &c, by which 

 means it is pretty loose. I could not observe whether they were muscular 

 or not. I think it very probable that they are glandular 3 . There was 

 some essential oil in the bag of prepuce. 



Mem. In the next boar, examine the thyroid gland 4 . 



The Common Hog 5 . 



The stomach is much more in the middle of the body than other 

 animals : it is of a particular shape, and seems distinguished into two 

 parts; for all that is on the left of the entrance of the oesophagus 6 , 

 makes a sort of pouch which is marked out by a sort of stricture : it is 

 thinner in its coats, and not so corrugated upon its internal surface. 



1 [Hunt. Prep. No. 549.] 



2 [This is the middle or azygos vesicula, which is a remnant of the ' protometra ' 

 of the embryo. See Hunt. Prep. No. 2537.] 



3 [Hunt. Preps. Nos. 1960—1965.] 



4 [This was done in a subsequent dissection : see p. 124.] 



6 [Part, at least, of this account is taken from the dissection of a boar.] 

 « [Hunt, Preps. Nos. 452, 453.] 



