PROCEEDINGS, 1871 — 1877 
361 
area by the ice-sheet ; whilst the upper, with Settle limestone, coming 
from a greater distance, would constitute a later deposit. Another 
glacial till on the east side of the watershed ranges from Quarry Gap, 
across Calverley Moor, to Eccleshill and Idle, It is outside the 
Bradford basin, and differs from that within by the absence of any 
boulders of limestone, large blocks of sub-angular gvit and sandstone 
alone being present, the contained stones all pointing to an origin at 
some point north of the\\ire, between Shipley and Skipton. 
At a general meeting of the members of the Society held at 
Barnsley on April 27th, 1876, Mr. L. C. Miall tendered his resignation 
of the office of honorary secretary, and Mr. James W. Davis, on the 
motion of Professor Green, seconded by Mr. Stott, was elected to fill 
that office. At the same meeting, Mr. John Brigg was elected treasurer. 
Mr. Richard Carter presided, and delivered an address on the mineral 
aspects of the West Riding Coal-field, in which he gave some informa- 
tion as to the great development of the coal-field, the correlation of 
the several beds of coal worked out to a large extent by members of 
the Society, and since further developed by the Geological Survey. 
The extraordinary stimulus during the two or three previous years in 
the coal and iron trades had vastly extended the area over which the 
Barnsley and Silkstone coal-seams were being worked, and an 
additional area of some eight miles in length, by two in breadth, had 
been added to the proved extent of the coal. If these were regarded 
with reference to the Barnsley bed alone, it would represent in weight 
about one hundred million tons of coal. He made especial reference 
to the Barrow and Hoyland Silkstone Companies, which had just 
completed very deep pits in the locaKties of Worsboro' and Hoyland 
Nether, to the Silkstone seam, the former sinking to a depth of 460 
yards from the surface. 
At the same meeting, ^Ir . B . Holgate read a paper, in which he 
described the character and extent of the several minerals of the 
Yorkshire Coal-field which are applied to the modern manufacture of 
iron ; the several fire-clays within this area were described, and the 
peculiar capability of each to resist the action of fire received due 
consideration. 
Dr. William Watts, of Giggleswick, contributed a valuable paper 
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