195 
PA.GB 
On the Basaltic Formation of the Soiith Staffordshire Coal Field," by Chas. 
Twaniley, Esq., F.G.S., &c., of London 691 
Statistical Eetums of the Mineral Produce of Yorkshire, for the year 1857," 
by Robert Hunt, Esq., F.E.S., Keeper of the Mining Records 696 
CONTENTS OF VOLUME IV.— 1859-1868. 
On the Geological Evidence of the Secvdar Expansion of the Crast of the 
Earth, and the Increase of its Orbit," «S:c., by Capt. Dray son, R. A., and 
the Rev. William Thorp 1 
In continuation : " The Astronomical Evidence," by Capt. Drayson, R.A. ... 27 
^' On the Temperature of the Springs in the Neighbourhood of Shefiaeld," 
by H. C. Sorby, Esq., F.R,S 40 
" On the Geological and Archaeological Contents of the Victoria andDowker- 
bottom Caves in Craven," by Henry Denny, A.L.S., &c -lo 
On Fire-Clays," by C. W. Biugley, Esq., Ph.D., F.C.S 75 
On some of the Differences in the Deposition of Coal," by S. Baines, Esq.... 77 
On the Geology of the Esk Valley," by John Watson, Esq. 91 
" On the Ore Deposits of Lincolnshii-e," by Robert Hunt, F.E.S 97 
Observations on Colliery Ventilation," by Richard Carter, C.E 110 
On the Relation existing between the Occiu-rence of Explosions in Coal 
Pits and the State of the Barometer at and preceding the Time of Ex- 
plosion," by W. R. Milner, Esq., M.R.C.S 119 
On Water Springs, and their Relation to Manufacturers," by John 
Jebson, C.E 122 
Considerations connected with the Relative Change of Land and Sea upon 
the Surface of the Earth," by Capt. Drayson, R.A 130 
On the Former Existence of the Roebuck in the West-Riding of York- 
shire," by Henry Denny, A.L.S 146 
^' The Rev. Mr. McEnery's Researches in the Bone Cave of Kent's Hole, 
Torquay, and their Relation to the Archaeology and Palaeontology of 
Britain," by the Rev. John Kenrick, M.A., F.S.A., of York 150 
" On Cromlechs and Rocky Stones Ethnologically and Geologically Con- 
sidered," by P. O'Callaghan, D.C.L., LL.D., F.S.A., &c 232 
On the Geologico- Archaeological Discoveries in Denmark, Switzerland, 
and France," by Sir John Lubbock, Bart., F.RS., &c 238 
Geological Excursion 292 
On the Microscopical Structvu-e of Mount Sorrel Syenite, Artificially Cooled 
slowly," by H. C. Sorby, Esq., F.R.S., of Sheffield 301 
Notice of an apparently undescribed Fossil Plant, from the Carboniferous 
Sandstone near Leeds," by Henry Denny, A.L.S 304 
*^ On the Condition of the Primaeval Inhabitants of the British Islands, as 
Evidenced by the Remains of their Weapons, &c.," by P. O'CaUaghan, 
D.C.L., LL.D., F.S.A 310 
Observations on the Distribution of the Extinct Bears of Britain, with 
especial Reference to a supposed New Species of Fossil Bear from 
Ireland," by Henry Denny, A.L.S 338 
On an Ancient Barrow or Tumulus, and Flint Implements found in the 
Neighbourhood of Bridlington," by Mr. Edwai-d TindaU, Bridlington... 387 
