PERMIAN, -i 
CARBONIF¬ 
EROUS. 
DEVONIAN 
' or 
Old Red 
Sandstone. 
SILURIAN. 
THE EOSSILIEEROUS STRATA. 135 
PRIMARY OR PALAEOZOIC. 
19. 
PERMIAN. 
20 . 
UPPER 
CARBONI¬ 
FEROUS. 
21 . 
LOWER 
CARBONI¬ 
FEROUS. 
22 . 
UPPER 
DEVO¬ 
NIAN. 
23. 
MIDDLE 
DEVO¬ 
NIAN.' 
24. 
LOWER 
DEVO¬ 
NIAN. 
25. 
UPPER 
SILURIAN. 
EXAMPLES. 
r Upper Permian of St. Bees’ Head, Cumber¬ 
land (p. 886). 
Middle Permian, magnesian limestone, and marl- 
slate of Durham and Yorkshire, with Protorosau- 
7'us (387). 
Lower Permian sandstones and breccias of Penrith 
and Dumfriesshire, intercalated (p. 390). 
Fbm'f/n—Dark-colored shales of Thuringia (p. 392). 
Zechstein or Dolomitic limestone (p. 392). 
Mergel-schiefer or Kupfer-schiefer (p. 392). 
Rothliegendes of Thuringia, wdthPsaronmy (p. 392). 
Magnesian limestones, etc., of Russia (p. 393). 
' Coal-measures of South Wales, with under¬ 
clays inclosing StigmmHa (p. 397). 
Coal-measures of north and central England (p. 
395). 
Millstone grit (p. 395). 
Yoredale series of Yorkshire (p. 395). 
Coal-field of Kilkenny, with Lahyrinthodont (p. 407.) 
Foreign —Coal-field of Saarbruck, with Archegosaurus 
(p. 406). ' 
Carboniferous strata of South Joggins, Nova Scotia 
(p. 409). 
Pennsylvania coal-field (p. 403). 
British —Mountain limestone of Wales and South of 
England (p. 430). 
Same in Ireland (p. 437). 
Carboniferous limestone of Scotland alternating 
with coal-bearing sandstones (p. 396). 
Erect trees in volcanic ash in the Island of Arran 
(p. 546). 
Foreign —Mountain limestone of Belgium (p. 436). 
■ British —Yellow sandstone of Dura Den, with Holop- 
tychius, etc. (p. 440); and of Ireland \s\i\iAnodon 
Jukesii (p. 441). 
Sandstones of Forfarshire and Perthshire, wfith Ho- 
loptychius, etc. (p. 442). 
Pilton group of North Devon (p. 449). 
Petherwyn group of Cornwall, with Clymenia and 
Cypridina (p. 451). 
Foreign —Clymenien-kalk and Cypridinen-schiefer of 
i Germany (p. 450). 
' —Bituminous schists of Gamrie, Caithness, 
etc., with numerous fish (p. 443). 
Ilfracombe beds with peculiar trllobites and corals 
(p. 450). 
Limestones of Torquay, with broad-winged Spiri- 
fers (p. 451). 
Foreign—Eiiiol limestone, with underlying schists con¬ 
taining Calceola (p. 453). 
Devonian strata of Russia (p. 454). 
' British —Arbroath paving-stones, with Cephalaspis 
and Pterygotus (p. 446). 
Lower sandstones of Forfarshire, with Pterygotus 
(p. 446). 
Sandstones and slates of the Foreland and Linton 
(p. 454). 
Foreign —Oriskany sandstone of Western Canada and 
New York (p. 456). 
Sandstones of Gaspe, with Cephalaspis (p. 455). 
{ British— Ludlow formation, Downton sand¬ 
stone, with bone-bed (p. 459). 
Lower Ludlow formation, with oldest known fish 
remains (p. 461). 
