24 ABNORMAL CONDITIONS OF THE AXIS. 



The following viscera are seen in this preparation : The stomach 

 of the superior foetus is displayed at the upper part of the mica, 

 with the duodenum, the remains of the liver, the jejunum, and 

 ileura. Near the middle of the latter, and connected with it by 

 about three quarters of an inch of intestine, is a portion of the large 

 cloacal sac from the inferior foetus. 



The accompanying description of the liver occurs in M. Maunoir's 

 paper (I.e.): " An enormous liver covers the whole intestinal mass, 

 and appears through the transparent membranous abdominal wall, 

 between the laminae of which a single umbilical cord [probably 

 the umbilical vein only is here alluded to] passes in a serpentine 

 course and enters the liver." The liver, anterior abdominal wall, 

 and cord have unfortunately not been preserved. 



The ileum bifurcates about an inch from its inferior extremity 

 and opens into two distinct caeca, each having a short vermiform 

 appendix. The large intestines are double : that on the right 

 side of the preparation belongs to the right side of the monster ; 

 it is opened to show its blind termination above the uterus. The 

 left large intestine belonged to the left inferior portion ; it termi- 

 nates in an anus. 



The kidneys of the right side are preserved ; they are adherent 

 throughout their entire length. The left kidneys are wanting, but 

 are stated to have had but one ureter between them. The blad- 

 ders, urethras, and external sexual organs on both sides are normal. 

 There is a uterus on each side, the right one being considerably 

 larger than the normal foetal uterus. 



Presented by the Medico- Chirurgical Society. 



103. The skeleton of a half-grown female Cat, with an imperfect 



accessory pair of innominate bones occupying the pubic 

 symphysisj an accessory pair of limbs are attached to 

 them. 



Although the axial parts of this pelvis and all the remainder of 

 a second animal are absent, there can be little doubt but that these 

 bones were developed from a second embryo. If the axis had been 

 developed an opisthozygous twin monster would have resulted. 



The second pair of limbs are short, distorted, and ankylosed to 

 the pelvis, probably from disuse. Their patellae are absent. 



The Cat was caught in a trap in a wood, where it had been living 

 in a wild state. 



Presented by W. B. Tegetmeier, Esq.., 1867. 



104. The bones of the pelvis and inferior extremities of a Sheep, 



with the pelvic bones and posterior extremities of an im- 



