PROCEEDINGS OF THE YORKSHIRE 
New Series, Vol. IX., Part II., pp. 145-336. 
WITH SEVEN PLATES. 
Edited by JAMES W. DAVIS, F.S.A, F.G.S, &c. 
CONTENTS. 
PAPERS.— PAGE. 
On some remarkable properties of the characteristic constituents of Steel." 
By H. C. Sorby, L.L.D., &c. ... .. ... ... 145 
" On Explosives used in Mining." By Joseph Mitchell, F Gr.S. 147 
"On a Concretion called Acrespire." By H. B. Stocks ... ... 149 
" On the Microscopical Structure of Rocks." By Rev. J. Mugens Mello M. A. 151 
"On Pre-historic Remains recently discovered in Weasleydale." By W. 
Home .. ... ... ... ... ... ... 175 
"Notes on the Polyzoa of the Wenlock Shalen, &c. ' By George R. Vine 179 
" On the Relative Age of the Remains of Man in Yorkshire." By James 
VV. Davis, F.S.A. . . ... ... ... ... ... 201 
" Abnormal Barometrical Disturbances in Yorkshire in 1 883 and 1 884." By 
Richard Reynolds, F.C.S. ... .. ... ... ... 214 
" On the Habitation Terraces of the East Ridia2r. ' By J. R. Mortimer, 
F.G.S. ... ... ... .. ^ ... ... 221 
"Notes on the Palaeontology of the Wenlock Shales of .Shropshire." By 
George B. Vine ... ... ... ... ... ... 224 
" Colliery Explosious an 1 the Weather of 1885." Anon ... ... 248 
" On some Remains of Fossil Trees in the Lower Coal Measures at Clayton, 
near Halifax. (Photograph)." By James W. Davis, F.G.S. ... 253 
"Notes on Ancient Coal Mining." By T. W. Embleton. M.E. ... ... 257 
" On the Cayton Gill Beds." By Rev. J. Stanley Tute. B.A. ... ... 265 
On Safety Lamps." By Prof. Arnold Lapton, C.E., F.G.S. ... ... 268 
" On the Exploration of the Ray gill Fissure in Lothersdale," By James 
W. Davi3, F.G.S. ... ... ... ... ... ... 2^0 
"On the Discovery of a Stone Implement in Alluvial Gravels at B&rnsley." 
By Samuel A. Adamson, F.G.S. ... ... ... ... 281 
"A Sketch of the Pre-Historic Remains of Rombalds Moor." By John 
Holmes ... ... ... ... ... ... ... 283 
Secretary's Report and Balance Sheet ... .. ... ... 316 
Minutes ... ... ... ... ... ... ... ... 323 
Summary of Geological Literature for 1885-6 ... ... 328 
List of Members ... ... ... ... ... ... ... 330 
HALIFAX; 
Whitley & Booth, Printers, Crown Street. 
1887. 
