304 SCOTTISH METROPOLITAN VETERINARY MEDICAL SOCIETY. 
The whole of the lower half of the femur was absent; the 
distal extremity of the upper part was expanded, and its medul¬ 
lary cavity hollowed out. 
Microscopical examination revealed a very delicate fibrillated 
stroma, with large spindle and myeloid cells, the former greatly 
predominating in number. A certain proportion of coloured and 
colourless blood-corpuscles were also present. 
As may be easily imagined, the tissues of the body were ex¬ 
tremely anaemic and the blood-vessels empty. 
Professor Walley also exhibited the small intestines of a foetal 
calf, which was the subject of spiral torsion, the axis being a 
fold of the mesentery. Venous strangulation was complete, and 
the intestine, as a consequence, presented the thickened, intensely 
hypersemic, and ecchymosed condition seen in intestinal torsion 
of the adult animals. The foetus from which he obtained the 
specimen had been forwarded that day by Mr. Taylor, of Seaford, 
and it was in the course of dissecting it that Professor Walley 
discovered the state of the intestine. The foetus was extracted 
from a cow by Mr. Taylor, two days previously; it was of large 
size and fully developed, but had never breathed, and was a 
beautiful and perfect specimen of a Diceplialus bispinalis 
quadrupes monstrosity, the two heads, necks, spines, and tails, 
being perfect. The four legs also were perfect, and the chest 
was nearly a yard in girth. On dissection, it was found that all 
the internal organs were fully developed, but single. The ster¬ 
num and pelvis were also single, and no connection other than 
these, the skin, and connective tissue, existed between the two 
spines. There were two sets of ribs, the superior set being 
much shorter than the inferior. 
Both spines formed a distinct lateral curvature in the pos¬ 
terior part of the thoracic region. 
Mr. Taylor had not had time to give any particulars of the 
case, further than that the foetus was extracted with some diffi¬ 
culty, and the cow was doing remarkably well. He promised 
details in due course. 
The President then proceeded to deliver his inaugural address 
as follows : 
G-entlemen,—In accordance with a promise made about a year 
ago, I propose in this my inaugural address to give you a sketch 
of the history of Inoculation for the prevention of Zymotic Pleuro¬ 
pneumonia, its practice, &c. In Gramgee’s ‘ Domestic Animals in 
Health and Disease,’ published in 18G2, we find it recorded that 
Dr. Willems, of Hasselt, in Belgium, suggested and carried out 
in 1851 inoculation with the virus of pleuro-pneumonia, in order 
to induce a mild form of the disease in healthy animals, and so 
prevent their decimation by attacks due to contagion. The work 
met with much encouragement, but, perhaps, quite as much 
opposition ; for while many accepted Dr. Willems’ results as 
incontestable, and wrote advocating his mode of checking this 
destructive plague, as many more, notably Biviglio, a Piedmon- 
