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CONTENTS 
August Number 
Introduction of Modern Geoeogy into America; by Charles 
Keyes .......... 
Environmentae Interpretation of Fossie Peants; by Edward 
W. Berry. 
Carbon Beack Industry in Kentucky, by Willard R. Jillson 
New Terebratuea from Eocene Terranes of Maryeand; by 
Joseph K. Roberts. 
Genesis of Anorthosites of Piedmont Pennsylvania ; by Isabel 
F. Smith . . • . 
Orogenic Consequence of a Diminishing Rate of Earth’s Ro¬ 
tation, by Charles Keyes. 
, Editorial : 
Gk)lden Age in Geology, 81; Nomenclature of the Hemeral 
Divisions of Terranal Classification, 84. 
Mining Geology: 
Curious Precursor of Modern Mining Organization, by C. 
Keyes, 87; Coal Fields of Kentucky, by W. R. Jillson, 88; An¬ 
tiquity of Chupadera Mesa Iron Deposits, by C. Keyes, 89; 
Oil Pools in Flat Arches in Montana, by C. H. Clapp, 92; An¬ 
timony Deposits in Okanogan Valley, Washington, by C. Keyes, 
94. 
September Number 
Roeein D. Salisbury: Life Sketch; by Charles Keyes . 
Geological Survey of China; by H. T. Chang .... 
Basaltic Rocks of Northern Bavaria; by Stephen Richarz 
Penepeainae Affinities of High Plateaux; by Charles Keyes 
Editorial : 
Discovery of Paleozoic Formations in New Mexico, 141; Fault¬ 
ing of Bonneville Lake Deltas, 143; International Geology, 146. 
*_^TRATIGRAPHICAL GEOLOGY : 
Permian Rocks of Grand Canyon, by C. Keyes, 147; Use of 
Chester as Terranal Title, by C. Keyes, 149; Absence of Lara- 
mian Beds in Southern Colorado, by C. Keyes, 150; Pennsyl¬ 
vanian in Time Span, by C. Keyes, 153; Superior Paleozoics 
of Rio Grande, by C. Keyes, 154. 
Eolian Geology: 
Physiographic Paradox of the Desert, by C. Keyes, 161; Meas¬ 
ure of Eolic Depletion of Great Plains, by C. Keyes, 162; Desert 
Soil Sorting by Winds, by C. Keyes, 164; Elutriation of Dia¬ 
monds by the Winds, by C. Keyes, 166; Significance of Girdled 
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119 
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