140 CAirrER : classifikd index. 
i'A(;i; 
Slieppard, Thos., F.G.S. — Xotes on Eleplias antiquus and other 
Remains from the Gravels at Ellougliton, near Brongh, East 
Yorkshire . . . . . . . . . . XIII. 2-21 
Simpson, Martin. — Observations on the Discovery of Coprolites 
in the Stanley Shale and Flockton Stone or Fish Coal . . 1 1 . 171 
Simpson, W. L., C.E. — On Fuel : its Nature, Value, and Applica- 
tion .. .. .. .. .. .. III. 173 
Simpson, William, F.G.S. — Xotes on the Strata and Deposition of 
the Millstone Grits . . . . . . . . Xll. 407 
Simpson, William, F.G.S., and Robert Law. F.G.S. — See Law and 
Simpson. 
Sladen, W. Percy, F.L.S., F.G.S. — On the Genus Poteriocrinus and 
Allied Forms . . . . . . . . . . VI. 242 
Sladen, W. Percy, F.L.S., F.G.S.— On Traces of Ancestral Relations 
in the Structure of the Asteroidea . . . . VII. 275 
Smith, Henry Ecroyd. — On a Romano-British ^Mosaic Pavement 
representing Romulus and Remus, discovered at Aldborough 
(Isurium of the Romans) . . . . . . IV. 593 
Solly, Richard. — ^On the ^Molecular Change in the Constitution of 
Wrought Iron, from the Effects of Vibration and Concu-ssion II. 14 
Solly, Richard. — On the Transmission of Earthquake Shocks beneath 
great Movmtain Ranges . . . . . . . . II. 344 
Solly, Richard. — Extracts from ^riscellaneous Observations on the 
Manufactiu'e of Iron, and especially on certain Qualities and 
Properties of jNIalleable Iron . . . . . . III. 257 
Sopwith, Thomas. — Isometrical Projection of the Alining District 
of Alston ^loor, and a ^lodel of the Forest of Dean . . I., iii. 25 
Sopwith, Thomas. — On the Preservation of Railway Sections and 
of Accounts of Borings, Sinkings, etc. . . . . I. 315 
Sopwith, Thomas. — On the Evidence of the Former Existence of 
Glaciers in Great Britain . . . . . . I. 419 
Sorby, Henry Clifton, F.G.S. — On the Existence of four Crystalline 
Species of Carbon . . . . . . . . III. 159 
Sorby. Henry Clifton, F.G.S. — On the Excavation of the Valleys 
in the Tabular Hills, as shown by the Configuration of Yed- 
mandale, near Scarborough . . . . . . III. 1()9 
Sorby. Henry Clifton, F.G.S. — On the Microscopical Structure of 
the Calcareous Grit of the Yorkshire Coast . . .. III. 197 
Sorl>y, Henry Clifton, F.G.S.— On the Contorted Stratification of 
' the Drift of the Coast of Yorkshire . . . . III. 220 
Sorby, Henry Clifton, F.R.S., F.G.S.— On the Oscillation of the 
Currents Drifting the Sandstone Beds of the South-east of 
Xorthumberland, and on their General Direction in the 
Coalfield in the Xeighbourhood of Edinburgh . . III. 232 
Sorby, Henry Clifton, F.R.S.. F.G.S.— On the Origin of Slaty 
Cleavage .. .. .. .. .. HI. 300 
Sorby, Henry Clifton, F.R.S., F.G.S.— On the Structure and Origin of 
the Millstone Grit in South Yorkshire . . . . III. 069 
Sorby, Henry Clifton, F.R.S., F.G.S.— On the Origin of the Cleveland 
Hill Ironstone . . . . . . . . . . III. 457 
