322 
ANIDIAN MONSTERS. 
of the blood-vessels is a considerable accumulation of adipose 
tissue ; it is almost the sole constituent of the sessile head 
or appendix, and into it branches of the blood-vessels freely 
penetrate. 
Notwithstanding the scantiness of historical data, the facts 
just related afford ample basis for a correct judgment as to 
the nature of the specimen. Developed as it was in the 
uterus, composed as it is of organized tissues, to which 
blood-vessels, obviously in the shape of an umbilical cord, 
proceed, there can be no question, even apart from a knowledge 
of other facts, that we have to deal with a foetal monstrosity, 
destitute of all definite shape. Happily, we have preserved a 
record of other cases of a similar nature. The fact, how- 
ever, of their being uncommon, and of my being able to add 
the particulars of three specimens to the cases studied by 
Gurlt, Vrolik, and Geoffroy St. Hiliare, who are the most 
eminent of teratologists, will, I think, be accepted as suffi- 
cient justification for the description I am about to give, as 
the basis for a few physiological considerations. 
Fig. 3 of the plate represents an Anidium which I had 
occasion to examine in the remarkable museum with 
which Professor Poletti has enriched the city of Fer- 
rara. It was also expelled by a cow, and possesses all the 
characters of the one above described, with the exception 
of being much smaller, and lacking the rudimentary mucous 
cavity, and the signs of a head. The umbilical artery 
and vein are to be seen at a , and a small tubercle of bone 
and cartilage, which are represented at b } add to the already 
accumulated evidence that even the lowest forms of ano- 
malous productions are never destitute of an attempt at high 
structural development. 
The collection of preparations in Professor Alessandrini’s 
museum in the University of Bologna, I found to be far too 
extensive to be fully studied in the few weeks of my stay 
there last spring, and being bent on preparing a large assort- 
ment of drawings from morbid specimens, with a view of 
practically illustrating disease in living animals, 1 was forced 
to omit Teratology, and for this reason I cannot reproduce 
on stone to-day, the very interesting specimen which is thus 
noted in the catalogue of my venerable master. 
“No. 2194. Amorphus, Gurlt; amorphus cephalicus of 
Alessandrini. A shapeless monster, principally composed of 
the elements of the head, with few viscera. The veterinary 
surgeon, Mr. Lugari, on the 14th day of June, 1834, whilst 
assisting a cow in labour, in the Commune di Spilamberto, 
Stati Estensi, noticed that after the birth of one live and 
