380 REPORT—1896. 
overlies shell-bearing clay. The latter is dark grey in colour, and con- 
trasts strongly with the overlying boulder-clay, which is of a dull reddish 
brown. ‘The two clays are equally distinct in composition. 
Boulder-clay. Shell-bearing Clay. 
50 per cent. fine mud. 80 per cent. fine mud. 
27 * sand, 21 fine and 6 coarse. 14 as fine sand. 
23 a gravel. 6 ” gravel. 
‘The shell-bearing clay as exposed in this section is seen standing up 
in the boulder clay like a boss or knoll. . . . At the greatest part visible 
it is 13 feet high, and it can be traced as it thins down, along the edge of 
the streamlet for a distance of 60 or 70 yards. Its exact depth could not 
be ascertained, but as the rock is seen at a short distance on either hand, 
it is probably not more than a few feet deeper than what is exposed. 
‘The fossils in this deposit are but thinly met with—molluses in 
particular are rare—Leda pygmea being the prevailing shell, with an 
occasional Leda pernula, Venus ovata, and a few fragments of other species. 
These were submitted to Mr. J. G. Jeffreys, and at least two of them have 
proved to be of much interest, viz., Pecten Groenlandicus and Montacuta 
elevata. 
‘ Pecten Groenlandicus has been met with on the east coast at Mon- 
trose, Errol and Elie, but not before in the west of Scotland... . 
Montacuta elevata is an Arctic species, and new to the glacial clays of 
Britain. 
‘Ostracoda and Foraminifera are more numerously represented in this 
deposit, eighteen species of the former and twenty-three of the latter 
having been obtained.’ 
A list of the organic remains from the shelly clay of Tangy Glen is 
appended to the foregoing paper. 
Drumore Burn.—-Another exposure of shelly clay was observed 
by Mr. Symes, of H.M. Geological Survey, in the course of his detailed 
survey of the peninsula of Kintyre. In the Drumore Burn 3 miles N. 
of Tangy Glen the shelly clay appears to underlie reddish boulder-clay, 
and yields broken fragments of shells. 
Cleongart.—By far the best section of shelly clay yet observed in 
Kintyre was discovered by Mr. Alex. Gray, of Campbelton, in a stream 
near Cleongart, about 4 miles N. of Tangy Glen, where it is overlaid by a 
great thickness of boulder-clay. A large collection of organic remains was 
obtained by Mr. Gray from this deposit, which were named by Dr. 
Robertson, and appear in the list appended to this Report. 
The Committee desire to acknowledge the valuable services rendered 
by Mr. Gray in the course of their investigations during 1895-96. He 
not only placed at their disposal his knowledge of the locality and his 
observations on this deposit, but he also superintended for several days 
continuously the boring operations at Cleongart. These services the Com- 
mittee feel they cannot overestimate, and in other respects also Mr. Gray 
did much to assist the Committee in their work. 
IV. Detailed Examination of the Shell-bearing Deposits by the Committee. 
Tangy Glen.—The lower part of this glen forms, for a distance of 
about half a mile, a deep rocky gorge carved out of mica-schist. 
Further up the glen the shelly clay appears on the left or south bank of 
the stream, overlaid by boulder-clay. During the visit of the Committee 
