516 
EXTRACTS FROM FOREIGN JOURNALS. 
EXTRACTS FROM FOREIGN JOURNALS. 
" 
DIFFICULT LABOR IN A MARE—PROLAPSUS RECTI WITH INVA¬ 
GINATION—DEATH. 
By M. Durieux. 
This interesting observation shows the serious character of in- 
vagitated displacements of the rectum. On account of an abnor¬ 
mal position of the foetus, a pregnant mare makes such violent 
struggles that she has prolapsus recti. She is soon relieved of 
her difficult accouchement, but the rectum remains protruding, 
forming a large tumor, red, purplish, through which an invagi- 
tration of the anterior into the posterior parts of the rectum can 
be readily discovered. The prolapsus is, however, carefully re¬ 
duced almost easily, still the mare dies the next day. Half an 
hour before death the prolapsus had returned, more serious and 
soon followed by its complete circular rupture at about half a 
yard from the anus. This is followed by a large hernia of the 
colic mesentery. At the post-mortem extensive hemorrhage into 
the peritoneum and a complete laceration of the meso-rectum and 
of the posterior portions of the colic mesentery are found. This 
was the cause of death. Evidently extensive prolapsus recti 
generally carry with them laceration of the peritoneal supports 
of the last portions of the intestines .—Annates de Bruxelles. 
MELANOSIS IN A CALF. 
By Messrs. Bailleux and Deqive. 
Melanosis shows itself under two principal forms, with or 
without proliferation of hisological elements. In the first case it 
is single melanosis, in the second it is hypertrophic or neoplastic 
melanosis. 
In the single melanosis, the melanic substance is accumulating 
' . • I 
in a limited region and forms a collection , a melanic cyst / or it 
is found diffused and disseminated in the meshes of a tissue and I 
constitutes melaiiotic infiltration. 
It is to this kind that this observation belongs. It was ob¬ 
served in a five days old calf. The melanine was infilterated at 
