24 



K IX AK LÖNNBEEG, 



same the testis. A remarkable feature is that the scrotal sack is al- 

 ready well developed, measuring, 2 mm. in depth and 3 mm. in antero- 

 posterior direction. .lust in front of the scrotal sack is on each side a 

 single small wart indicating the rudiment of the nipples. The left 

 lung is fully separated into four lobes, the right into six and an 

 azygous one. 



The paunch measures about 6 mm. as well longitudinally as 

 dorsi-ventrally. It lies, as is seen in the figure, close to the left body- 

 wall, ventrally it is bordered by the liver, behind by the colic spiral, 

 and more dorsally by the left kidney. Both sacks of the paunch lie 

 practically in the same vertical plane. The dorsal sack seen from 

 the left side is almost crescent-shaped and the sulcus lonyitudinalis is 

 well developed, it is especially deep proximally. Sulci coronarii of both 

 sacks are also well developed and the two sacci cœci are roundish in 

 shape and curved towards each other so that they are in contact. 

 That of the ventral sack is larger. The reticulum is comparatively 

 very large, measuring almost 5 mm. in dorsiventral and 4 in antero- 

 posterior direction. The psalterium measures 3 1 2 mm. in length by a 

 little more than 2 in width. The abomasus does not offer any peculia- 

 rities. The small intestine makes first a quite short loop close to the 

 hiius ef the liver then turns backwards forming a long loop which 

 reaches on a level with the hind margin of the kidneys then it returns 

 and enters as jejunum the common mesentery. To follow the intricate 

 whirls of this organ is not possible, they occupy, however, an almost 

 central and ventral position in the abdominal cavity. The colic spiral 

 is not yet fully formed as may be concluded from a comparison with 

 the following stages. It consists of about 1 1 2 coil in each direction. 

 Its situation is already mentioned above. The rectum is almost the 

 narrowest portion of the whole intestine. It runs quite straight in the 

 median line in the dorsal part of the abdominal cavity. 



The comparative size and the position of the liver has already 

 been described. It is only divided in two main lobes by the umbilical 

 fissure. The caudate lobe is large and extends with its tip beyond 

 the margin of the right lobe. It caps from the ventral side not only 

 the whole right kidney but also the testicle and the epididymis. The 

 testicle is smaller than the epididymis and quite globular. 



The spleen occupies the normal situation, but it has a different 

 shape from that in the adult. It is namely elliptic almost equally 

 rounded at both ends. The greatest convexity is situated near the 



