354 VETERINARY SURGICAL THERAPEUTICS. 
Aneurisms constitute a prominent danger. Wounded, they give rise, to 
an abundant hemorrhage; their rupture is generally fatal. Internal 
aneurisms are beyond surgical interference; the external only are justifi- 
-able of an active treatment; they are rare in animals. They have, hows 
ever, been observed in horses on the palatine artery, the pharyngeal, inter- 
nal maxillary, gluteal, on various arteries of the legs; in cattle, on the- 
vertebral, ischiatic and the “dial, The observations of Blaise, Steinmeyer, 
Walley, refer to horses that have died from rupture of aneurisms of the: 
pharyngeal, carotid and internal maxillary arteries. 
When, upon the course of an artery, one observes a tumor evenly fluctu- 
ating, depressible, reductile, pulsating, he must think of aneurisms. Some-- 
times they are mistaken with neoplasm developed on the tract of a. 
vessel. Mller has told us that he made an error of this kind and took. 
a carcinoma of the neck for an aneurism. A puncture improperly made- 
may be followed by the most serious sequela ; as the case of King related 
by Percivall in his Hippopathologv: An old horse had on the croup a. 
tumor of the size of a man’s head’; it was fluctuating. King punctured it : 
a flow of blood took place at once; plugging was vainly tried, the animal. 
dying. Dissection revealed the presence of an aneurism, partly ossified,. 
of the gluteal artery. 
In the case of the cow recorded by Collin, she had on the left side- 
of the neck a soft, elastic tumor, as big as the fist, well defined, not 
adherent to the skin, without heat or pain. Mistaking it for a cyst, the 
author tapped it witha pointed red iron, which was immediately followed 
by a flow of rutilant blood, jerky, as big as the finger. A continued suture: 
arrested the hemorrhage; but the blood escaping in the subcutaneous 
cellular tissue, the tumor became treble in size, and the arterial beatings 
were readily perceptible. The treatment consisted of cold lotions. The 
size of the tumor diminished. All danger seemed avoided, when the animal 
rubbed herself against a tree, and serious hemorrhage followed. The 
animal was sold to the butcher and destroyed. She had an aneurism of. 
the cervical artery. 
Spontaneous recovery of aneurisms is possible; it takes place by 
thrombosis ; a clot is formed in-the sac and closes it. The artery may 
keep its caliber or obliterate. Such termination is rare; ordinarily aneur- 
isms assume larger and larger dimensions, disturb the surrounding tissuest. 
and their possible rupture is a constant danger to the life of the patient. 
Furlanetto thought best not to interfere in two cases of aneurisms, quite: 
large, of the tibial artery in steers. Both animals were able to continue 
their work. 
Various methods oft reatment have been recommended against aneur- 
isims. General depression by bleeding, low diet and purgatives (method 
