110 SCOTTISH MARBLES. 
and veined or spotted with yellow or green ; some specimens 
are nearly white. The granulations are peculiarly large; 
and, in its aspect and composition, the Glen Tilt has 
great general resemblance to the Pentelic marble (143). 
This marble has of late attracted the notice of the Duke 
ofAthol, through the suggestion of Dr. Macculloch; 
and chimney-pieces of it have since been made. It is 
obtained from a valley of the same name in the county 
of Perth. 
180. BLAIRGOWRIE MARBLE. A few miles from 
Blairgowrie, in Perthshire, there is an excellent granu- 
lated broad-bedded marble, of sugar-loaf texture, and as 
white as the finest statuary marble. It may be easily 
raised in blocks and in slabs of great size, perfectly free 
from blemishes. This marble is supposed to be well 
adapted for ornamental architecture, but its large sparry 
texture renders it unfit for the sculptor. 
181. GLEN A VON MARBLE is of white colour, with 
large granular concretions, somewhat like spangles, and 
as large as the scales of fishes. This is a valuable kind ; 
but its situation in the forest of Glenavon, on the pro- 
perty of the Duke of Gordon, is remote and difficult of 
access. 
182. BALLICULISH MARBLE. On the north side 
of the ferry of Balliculish, in Lochaber, there is a rock 
of marble, of beautiful ash-grey colour, and of a fine, re- 
gular, and uniform grain, which is capable of being 
wrought into blocks or slabs of any size, and is sus- 
ceptible of a fine polish. This marble is finely sprin- 
kled throughout with grains and specks of pyrites (236), 
and with grains and specks of a beautiful lead ore, which 
to the eye appears to be rich in silver. If used for or- 
namental purposes, it would be a bright and beautiful 
metallic marble. 
183. BLAIRMACHYLDACH MARBLE. In the bed of 
a river, at the farm of Blairmachyldach, about three 
miles south of Fort William, is a singular marble, con- 
sisting of a black ground, flowered with white. It is of 
