ON THE SHELL-BEARING DEPOSITS IN KINTYRE. 381 
it was observed that the section described by Dr. Robertson in 1873 had 
become overgrown with herbage and bushes, and was also partly concealed 
by a low breast wall. Several artificial cuttings were made on the face of 
the bank, and samples of the clay were taken for examination. The 
observations of the Committee, so far as they went, confirmed those of 
Messrs. Robertson and Crosskey in the paper referred to. 
The shelly clay is a stiff, fine, bluish grey clay, upwards of 5 feet of 
the deposit being laid bare. The upper portion seemed to be affected by 
exposure to the weather, and the darkish-blue colour was chiefly apparent 
in the lower part. About 30 feet of reddish boulder-clay with numerous 
boulders lie above the shelly clay, rising to a greater height further back 
from the stream. 
At this point there is evidence of land-slips on the face of the bank, 
so that the two deposits are sometimes intermingled. 
The top of the shelly clay as exposed in the trench made by the Com- 
mittee was found by Mr. Fraser, C.E., to be 1354 feet above the level of 
the sea. 
Drumore Glen.—The lower part of this glen shows prominent cliffs 
of red sandstone (Upper Old Red Sandstone), the strata dipping at angles 
of about 8° down stream. Overlying the sandstone is a considerable 
thickness of grey boulder-clay, full of boulders of crystalline schists. 
The sides of the glen are in some places masked by the boulder-clay 
slipping down over them. Resting apparently on the sandstone, however, 
and under the boulder-clay, there are occasional patches of gravel and sand 
and brown sandy clay, in the upper part of which some shells and shelly 
fragments have been found. 
The top of the brown shelly clay here was found by Mr. Fraser to be 
199 feet above the level of the sea. 
Cleongart Burn.—As this is the most important section of shelly 
clay hitherto observed in Kintyre, the Committee confined their detailed 
observations chiefly to it. 
As in Drumore, the lower part of the glen is occupied by red sand- 
stone (Upper Old Red), which in places forms prominent cliffs, rising to a 
height of 20 feet or 30 feet. The sandstone is nearly horizontal, or inclined 
westwards at an angle of 8° to 10°, resting unconformably on the crystal- 
line schists. 
About 44 yards eastwards from the unconformable junction of the red 
sandstone and the schist visible in the bed of the stream, the main section of 
the shelly clay occurs on the south bank of the Burn, where it is overlaid by 
a great thickness of boulder-clay. The shelly clay is a stiff, dark, bluish 
clay, comparatively free from stones in the upper part, though here and 
there throughout the section well-rounded stones are met with. An ex- 
amination of the included blocks, the average size of which varies from 
1 inch to 3 inches across, shows that they are chiefly of local origin, 
being composed mainly of mica-schist with granular quartz-schist, and 
hornblende-schist. No fragment of red sandstone was observed in this 
deposit in the main section. No striations were observed on any of the 
stones. 
Shells were found in abundance during the first visit of the Committee 
in 1895, a feature which was probably due to long exposure of the mate- 
rials to the action of the weather, and the removal of the clay from the 
surface by the rain. 
