gage FO On the ROCKS in the 
appearance, however, befpeaks their having been, at fome for— 
mer period, totally included in the greenftone. One mafs, in- 
deed, a little towards the north, is unequivocally fo; at leaft we: 
know with certainty, that a fhort time ago it was inclofed in 
the greenftone, and not to be feen ; and there is-at prefent, great 
apparent probability, that the next fection taken from the fame. 
part of the rock, will carry it away altogether. 
TLL now, we only knew of one included mafs in the green- 
ftone of Salifbury Craig; and with this, thefe now difcovered. 
have confiderable analogy ; they are of the fame colour, and al- 
though they appear to be only four or five diftiné mafles, 
thefe maffes are all interfected vertically and diagonally, and 
axe fplit through the whole length of the horizontal line; fo 
that in examining a feGtion of about ten feet perpendicular, no. 
tefs than nine different alternations of fandftone may be reckon- 
ed. Some of them are no doubt very minute; but {till they were 
all obfervable when I examined the rock. 
From the moft northern ma{s of included fandftone, I was 
enabled to procure a. few fpecim€ns, which I have added: 
to the above collection. The rock rifes fo rapidly from 
the fouth, that although this mafs is nearly in the fame hori- 
zontal line with the others, all'of which crop out to the furface,. 
and although it is not diftant more than four or five yards, yet 
it appears to be fituated nearly about the middle, between the 
fandftone and the upper furface, from which it may natural- 
ly be inferred, that the mafles which now crop out, were like 
this, once entirely included in the fubftance of the greenftone. 
It is highly indurated, and at the extremities, is drawn out into 
minute veins. The thicknefs. of the principal mafs may be 
from ten to twelve inches, and in length from fix to eight feet.. 
This body, as above noticed, is cut in all directions by the 
. ereenftone.. 
