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half a walnut- fhell laid upon a flat furface, with the 
convex flde upwards ; for the horny particles, which, 
according to nature, ought to have had their fecre- 
tion to produce horns in the ufual places, were de- 
termined to this monflrous one perpetually, in th« 
manner, which I have already attempted to explain, 
in the chapter of the analogy between the fluids of 
animals and vegetables, of my late treatife, intituled, 
Philojbphical obfervations upon the analogy between the 
propagatwi oj animals and vegetables^ &c. 
It is faid by the perfon, who brought the fluffed 
fkin of this fheep to the Society lafl Thurfday, that 
upon opening him there was found, in the top of the 
horn next the throat, which is hollow half-way 
down, a fkull of a contradled round form, with 
blood-veffels running upon it, and a bag filled with 
grumous blood, among which was a fublfance like 
a flieep’s liver and lungs; and a perfedt- found kid- 
ney, like that of a frefh loin of mutton. And this 
is attefled by the nam*es of three houfe-keepers of 
credit, who were prefent when the animal was opened, 
and who, if required, are ready to make oath of it. 
If this be true, the cafe of this flaeep is of 'the fame 
nature with thofe of the cow, which v/as fliewed in 
the mufeum, to the whole Society, in November 
1748, having the parts of a twin-fiffer adhering to 
the fpine, and prominent upon her back : and alfo 
of an ox, which was fhewn in town about that time, 
having the head of a twin-calf hanging from be- 
tween the fldes of the under jaw, by a narrow fkin. 
As to the manner, in which fuch monflrous pro- 
dudions are formed, in order to avoid an unneceffary 
repetition, I refer to my account of two female 
VoL. 4p. B b children, 
