268 
A. LIAUTARF). 
are more frequent in bovine animals ; though Foster lias seen them 
in the pig, and Bruckmuller in the horse, where they have been 
found in the maxillary sinus, extending sometimes in the nasal 
and in the masseter.” 
In the article “ Cancer of Bones,” Lafosse writes: In the 
second foim, for it admits of four, all the tissue of the bone is 
affected, and the organ presents a more or less voluminous en¬ 
largement, which, under the microscope, is composed of a long 
areolar tissue, whose cells are filled with the more or uss soft 
cancerous tissue. The bones of the face present frequent ex¬ 
amples of that disease.” And again, “ in the third form, the 
bone is puffed up and forms large lodges, in which the cancerous 
tissue is developed ; and if by section or putrefaction the tissue is 
Removed, the bone has the aspect of a waste box, divided into com¬ 
partments by this septum, complete or incomplete, and having its 
walls formed bv a very thin sheath, cribbed with openings. * * 
This is called spina ventosa. We had seen very handsome cases 
of that disease in the jaw of the ox and of the horse.” 
Roll, in the “ neoplasms of bones,” says “ Sarcoma develop 
themselves sometimes in the bones of the face of bovines, and 
may present a large size. Bones affected are tumefied, puffed up, 
as in spina ventosa.” 
According to Wirchow the name of “ osteo sarcoma” was not 
adopted until modern times. Until the middle of the present 
century it was understood to be the same tumor named by the 
Arabs, ventositas spinas , or spina ventosa, or by others osteo stea- 
toma , and again by others malignant exostosis. Williams says 
that osteo sarcoma are “ tumors of irregularly protuberant surface, 
affecting both the upper and lower jaw of horned cattle, of gen¬ 
erally slow, but sometimes rapid growth,” and Gamgee, under the 
name of fibro-plastic degeneration of bone, calls a disease of young 
cattle known by some veterinary writers as osteo sarcoma, spina 
ventosa and other inappropriate names. 
This general review of the definition of the disease seems to 
prove that while different names have been given to a diseased 
condition of bone, it is generally admitted that a cancerous degen¬ 
eration takes place, and that more commonly animals of the 
