ao6 On thé Nervous Systems of 
full time, it was considerably smaller than. the — 
ordinary size. It had a club foot and three of 
the ribs were united on the right side. The 
mother had perceived the motions of this fetus 
inthe womb. Mr, Gibson dissected this singu-: 
lar fetus and is in possession of the skeleton. 
2. The brain has been found entirely wanting; 
the. spinal marrow being in a perfectly natural. 
state: A remarkable case of this kind is related 
by. Dr. Heysham, an ingenious physician at 
Carlisle, in his account of the Bills of Mortality: 
of that city forthe year 1788, and sees 
by some valuable remarks. 
I shall give the whole of the case in his owm 
words. 
«* At eight o’clock on Monday morning, May 
26, 1788, Mary, Clarke, aged 26 years and the 
mother. of ;six...children, some of whom are 
bealthy and others,-unhealthy, was delivered of a 
living female chiid, at tht expence of thé Carlisle 
Dispensary. The midwife, shocked at the strange 
and unusual appearance of the child’s head, sent 
for me immediately. 1 got there about an hour 
after. the delivery and at first sight it appeared 
evident, that the bones, which form the upper 
part of the skull, were wanting and that the brain 
was only covered by its proper membranes, the 
pia and dura mater, and resembled a large ex- 
crescence, which projected a little over. the 
