CONTENTS. 
JULY NUMBER. 
Observations Regarding the Occurrence of Anthracite, 
with a New Theory of Its Origin. W. S. Greslet. 
[Plate L] 1 
Serial Nomenclature of the Carboniferous. Charles R. 
Ketes 22 
Notes on Cambrian Faunas; the Genus Microdiscus. G. 
F. Matthew 28 
On the Occurrence of Silurian Strata in the Big Horn 
Mountains, Wyoming, and in the Black Hills, South 
Dakota. C. E. Beechek 31 
The Amount of Water in the Earth's Crust. W. B. 
Greenlee ...r 33 
Ediiorial Comment. — The Geological Society of America, .35. 
Review of Recent Geological Literature. — Ueber die Beziehungen cler 
fossilen Tabulaten zu den Alcyonarien, F. W. Sardeson, 37. — The 
University Geological Survey of Kansas, Erasmus Haworth and 
Aesistauts, 42. — Ice-work, Present and Past, T. G. Bonney, 44. — 
Geological Survey of Canada, Report on the Surface Geology of 
ISJew Brunswick, Nova Scotia, and a Portion of Prince Edward 
Island, Robert Chalmers, 4G. — Las Rocas ErujJtives de Surveste 
de la Cuenca de Mexico, Ezequiel Ordonez, 47. — On Certain 
Granophyres, Modified by the Incorporation of Gabbro Fragments, 
Alfred Parker, 48.— The Rubies of Burma and Associated Min- 
erals, J. W. JuDD, 49. — Sobre la edad de Algunas Formaciones 
Carboniferas de la Republica Argentina, Guil. Booenbender. 
4f>. — A Mineralogical Lexicon of Franklin, Hampshire, and Hamp- 
den Counties, Mass., B. K. Emerson, 50.— Traces of the Ordovi- 
ciau System on the Atlantic Coast, G. F. Matthew, 50.— A Sum- 
mary of Progress in Mineralogy in 1895, W. H. Hobbs, 50.— Fossil 
Fishes of the Moray Firth, R. H. Traquair, 51. 
Recent Publicationa, 52. 
