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CONTENTS. 
JULY NUMBER. 
Page 
Biographical Sketch of George Clinton Swallow. G. C. 
Bkoadhead. [Plate I.] 1 
The Great Ice-Dams of Lakes Mauniee, WhittlCvSey and 
Warren. Frank B. Taylor. [Plates II and III.] 6 
Origin and Age of Certain Gold '' Pocket" Deposits in 
Northern California. O. H. H?:rshey BS 
Geological Notes on the Wichita Mountains, Oklahoma, 
and the Arbuckle Hills, Indian Territory. T. Way- 
land Vaughan 44 
Revieio of Recent Geological Literature. — A Paleozoic Terrane beneath 
the Cambrian, Geo. F. Matthew, 55. — Wachsrauth and Springer's 
Monograph on Crinoids, F. A. Bather, 56. — Sveriges alsta kanda 
Trilobiter, Jno. Chr. Moberg, 59.— Nagra Calcitkri.staller frjin 
Nordmarken, Jno. Chr. Moberg, 59. — Palfeontologiska Notiser, 
Gerhard Holm, 59. 
Monthly Autliors'' Catalogue of American Geological Literature, 60. 
Personal and Scientific Neivs, 65, 
AUGUST NUMBER. 
Oliver Marcy, LL. D. A. R. Crook. [Plate IV.] 67 
Age and Origin of Certain Gold Deposits on the Isthmus 
of Panama, O, H. Hershey 73 
Leptichthys, a New Genus of Fishes from the Cretaceous 
of Kansas, Alban Stewart 78 
Glacial History of the New England Islands, Cape C'od 
and Long Island. Warren Upham 88 
Notice of a New Discovery Concerning Uintacrinus, 
Frank Springer 92 
The Evolution of Climates. Marsden Manson 93 
Revieiv of Recent Geological Literature .— Minernls in rock sections; 
the practical methods of identifying minerals in rock sections with 
the microscope; especially arranged' for students in technical 
and scientific schools, L. M. Luquek, 120. — The Islands and 
VVVV"^ 
