ANALYSIS OF CONTINENTAL JOURNALS. 131 
attributed to chronic affections of the intestines, and which 
are often accompanied with diarrhoea and hinder the animal 
from being well nourished. 
On post-mortem examinations of horses which have died from 
colic it is not always easy to find the point where the artery 
is obliterated, nor to find the embolism which is the cause of 
the evil. The great development of the intestinal vessels, and, 
above all, their general injection, makes the search difficult, 
and great patience is necessary to find it. 
On making the autopsy of horses which have recovered 
from colic of this nature, after a longer or shorter period, 
we find in the peripheral vessels of the anterior mesenteric, 
as well as in the corresponding veins, old lesions in the form 
of thrombus; these vessels are more or less obliterated, and 
around there is ordinarily pigmentary deposit in the perito¬ 
neum and other tissues. M. Bollinger says that on a square 
centimetre he has sometimes found five to six arterial twigs 
on small veins thus obliterated, and M. Bruckmuller has 
equally noticed them, without, however, attributing them to 
the lesions of colic. 
Let us remark, also, that colic produced by an embolism 
may be influenced by other etiological phenomena. Food 
which easily undergoes change, and which rapidly gives rise to 
large quantities of gas, aggravates the disease; so it is if the 
embolism occurs at the time of digestion, when the viscera 
are full of indigested food. 
M. Bollinger is far from wishing to explain every case of 
colic by embolisms. He admits readily that they may be 
due to evils in feeding, to bad fodder, to the various forms 
of calculus, to intestinal w T orms, to the action of poisons, or 
to the effect of hernia or of volvulus. He does not, however, 
admit that colic is due to enteritis, unless caused by poisons 
or miasma, and he supports his opinion by the fact that in 
man and all the other domestic animals enteritis is slower 
and, above all, more regular in its course than that observed 
in the horse, and often in this same animal we find true 
enteritis not accompanied by colic. 
Let us remark that observations on obliterations of the 
mesenteric artery by fibrinous clots, corresponding to aneu¬ 
risms, have been occasionally published by veterinarians. 
Thus, in the Becueil for 1829 there is one by Rigot, in 
that of 1830 one by Hering, and in that of 1853 another by 
Reynal. In the Vierteljahrsschrift of Vienna for I860 and 
1861 there are two observations by M. Bruckmiilier, and 
in the Journal cles Veterinaires du Midi of 1867 an ob¬ 
servation by MM. Bonnaud and Andrieux. In all these 
