(« 5 ) 
fire tears the Rock to get forth, and fo crackes and breaks if 
all about, that at one time a vaft deal of it will either be quite 
blown out, or fo crackr and broken, as will make it eafy to be 
remov’d: And according to the effect of one inch Cartridge, 
more may be afterwards made ufe of, as hath been (aid. 
Obfervables u^on a Monftrous Head. 
This was the Head of a Colt , reprefented in the annexed 
Figure a., firft viewed by Mr. Boyle, who went into the Stable 
where the Colt lay, and got the Head hafts ly and rudely cot off, 
the Body thereof appearing to his Eye compleatly formed , 
without -any Monftrofity to be taken notice of in it* Afterwards 
he caufed it to be put into a Veffel, and covered with Spirit of 
Wine, there by chiefly intending, to give good example, together 
with a proof, that by the help of the faid Spirit, (which he hath 
recommended for fuch Properties in one of his Ejftiys of the 
Vfefulnefs of Natural Phlofophy') the parts of Animals 5 and even 
Monfters , may in Summer it lei f be preferred long enough, to 
afford Anatomies the opportunities of examining them. 
The Head being opened, and examined., it was found, 
Firft , That it had no fign of any Nofe in the ufual place, nor 
hadn't any, in any other place of the Bead, uolefs the double' 
Bagg CC, that grew out of the mid ft of the forehead, were 
fome rudiment of it. 
Next, That the two Eyes were united into one Double Eye, 
which was placed juft in the middle of the Brow, the Nofe be- 
ing wanting, which fhould have feparated them, whereby the 
two Eye-holes in the Scull were united into one very large 
found hole* into the midft of which, from the Brain, entred 
one prety large Optich^ Nerve, at the end of which grew a great 
Double Eye- that is, that Membrane, called Sclerotis , which con- 
tained both, was one and the famejbut feemed to have a Seam, 
by 
