506 On the Nervous Systems of 
figure, about four inches in length and three 
inches in breadth, One edge of it was rather 
more concave than the other and near its centre 
there was a slender funis umbilicalis, about 
1% inch Jong, which had one artery and one 
vein.. There were two imperfect feet and a 
small projection having the appearance of a 
finger; Internally this monster was composed of 
soft and bony matter; the former ‘ appeared 
of a homogeneous fleshy texture, but without any 
regular or distinct arrangement of musculat 
fibres and was very vascular throughout; the 
bones, which were surrounded by this fleshy 
substance, were the os innominatum,the os femorisy 
the tibia, the fibula.”—The os innominatum and 
os femoris were both perfect and as large as those 
of a fetus at the full period of utero-gestation. 
“ There was not the smallest appearance of head, 
or vertebra, or ribs. There was neither brain, 
spinal. marrow, nor nerves, It had no ‘heart, 
nor lungs.”? It contained none of the viscera 
subservient to digestion, except a little portion 
of small intestine, which had a peritoneal cover- 
ing and was very vascular, It had no organs of 
digestion, nor any glandular substance whatever 
‘Amongst other remarks, Dr. Clarke observes 
“that the deficiency. of nerves renders it ex- 
tremely probable, that their use is very small, if 
_any to the embryo.”’ 
