REVIEWS 
The Geology of the Glasgow District. By C. T. CLoucnu, L. W. 
HiInxMAN, J. S. Grant Witson, C. B. Crampton, W. B. 
Wricnt, E. B. Batrey, E. M. ANDERSON, R. G. CARRUTHERS, 
with contributions by G. W. GraBHaAm, J. S. FLETT, and a 
chapter on the paleontology by G. W. LEE. Memoirs Geol. 
Sunvey scotland, 1910.  Pp.i270; figs. 32\) pli i. 
Sandstones and basalts are the representatives of the Old Red 
Sandstone period. Associated with the Lower Carboniferous lime- 
stones and sandstones are extrusives of basalt, mugearite, and tuffs 
and intrusives of basalt, dolerite, trachyte, felsite, trachyandesite, 
trachydolerite, and basaltic and trachytic tuff in vents. In Upper 
Carboniferous times sedimentation was predominant, although some 
basic sills and plugs are possibly of this age. In the Permo- 
Carboniferous there were intrusions of quartz dolerite sills. During 
the Tertiary, dikes of olivine dolerite were intruded. The Pleistocene 
and Recent are represented by glacial deposits, old beaches, river 
terraces, and flood plains. 
Coal is the principal economic material and occurs in both the 
Upper and Lower Carboniferous. Iron carbonate and fire clays are 
also exploited. Many analyses of limestone are given. 
AvieeE. 
The Geology of East Lothian. 2d ed. By C.T.CLoucn, G. BARRow, 
C. B. Crampton, H. B. Maurer, E. B. BAtLEy and E. M. 
ANDERSON, with contributions by B. N. PEacH and JOHN 
Horne. Memoirs Geol. Survey Scotland, 1910. Pp. 226; 
HgESent) plsy 12: 
This educational handbook to the geology of the region discusses 
the formations and their faunas, and describes the associated igneous 
rocks. The Silurian period is represented by shales, greywackes, grits, 
conglomerates, and cherts. Two small granite masses, older than the 
Old Red Sandstone, intrude these formations. The rocks of the Lower 
Old Red Sandstone period consist of bosses and laccoliths of granite, 
porphyry, etc., and dikes of porphyrite, felsite, and lamprophyre. The 
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