RARE LUSUS NATURE. 
323 
same subject. My object in offering them is to give credit 
to whom it belongs, which our New York and Boston 
friends would rob Philadelphia of, which I presume they 
will not attempt to deny. 
Very respectfully yours, 
Robert Jennings, Jun. 
Pittsburg, Pennsylvania. 
RARE LUSUS NATURAE. 
Case communicated by J. S. Darwell, Y.S., Leigh, 
near Manchester. 
I have this day forwarded to you at the Royal Veterinary 
College a monstrosity, thinking it worthy of a place in the 
College Museum, and the publication of the particulars in 
the Veterinarian. I was called to deliver a cow a day or 
two ago, which had been in labour for twelve hours prior to 
my visit, and found she had twin calves. The first I delivered 
was perfect in form and fully developed, but it was dead, 
and was lying in the uterus with its head turned towards its 
side. The second was the lusus naturae which I send; the 
fracture of the limb I caused in extracting it. After extracting 
the dead calf I found one hind leg of the remaining one, and I 
tried to secure the other leg and deliver by the breech, but 
without success. I then corded the leg within reach with 
the intention of dismembering it; but owing to the traction 
on the leg it fractured, which, altering the position, assisted 
in its delivery, the throes being also very strong. Nothing 
was known of the nature of the case before my visit. The 
mother is doing well; indeed, she is convalescent. 
We are indebted to Mr. Steel, Lecturer on Anatomy, 
R.V.C., for the following account of the monstrosity : 
The specimen consists of two fairly-formed hind limbs, 
united together by an oval mass, which is flattened from 
above downwards. The upper surface is uniformly smooth 
and covered with brown curly hair. The under surface presents 
posteriorly a smooth hairless space, extending downwards and 
forwards until it terminates in a rounded opening, which 
has long hairs around its lower margin, and seems to be the 
urino-generative aperture. In front of this, on each side, 
may be observed rudimentary mammae, with two small teats 
on each side. The remainder of the under surface bulges, 
and presents centrally an umbilicus, from which an umbili¬ 
cal cord hangs. Length of the specimen six inches ; thick¬ 
ness at centre three inches; width from one stifle-joint to 
