a Child with a double Head. ^ Q ^- 
The two Ikulls appear to be almoft equally perfect at their 
nnion ; but the fuperior Ikull, as it recedes from the other, is 
becoming more imperfedt and deficient in many of its parts. 
The meatus auditorius in the temporal bone is altogether 
wanting. 
The balls of the fkull is imperfect in feveral refpe£ts, par- 
ticularly in fuch parts as are to connect the Ikull with a body. 
The foramen magnum occipitale is a fmall irregular hole, 
very inefficient to give paffage to a medulla fpinalisj round 
its margin are no condyles with articulating furfaces, as there 
were no vertebrae of the neck to be attached to it. The fora- 
men lacerum in bafi cranii is only to be feen on one fide, and 
even there too fmall for the jugular vein to have paffed through. 
The ofla palati are deficient at their pofterior part ; the lower 
jaw is too fmall for the upper, and the condyle and coronoid 
procefs of one fide are wholly wanting. 
In mod of the other refpedts, the two Ikulls are alike ; the 
number of teeth m both is the lame, and is fixteen. i 
From an examination of the internal ftrudfure of the double 
Ikull, the two brains have certainly been inclofed in one bony 
cafe, there being no feptum of bone between them. How far 
they were intirely diftindt, and furrounded by their proper 
membranes, cannot now be afcertained ; but from the fympa- 
thies which were taken notice of by Mr. Stark between the 
two heads, more particularly tiiofe of the fuperior with the 
lower, or more perfeft, I Ihould be inclined to believe, that 
there was a more intimate connexion between them than fimply 
by means of nerves, and therefore that the fubftance of the 
brains was continued into one another. 
Had the child lived to a more advanced age, and given men 
of obfervation opportunities of attending to the effedts of this 
double 
