IV Contents. 
(ilaeial Notes from the Planet Mars. E. W. Claypole. 
[Illustrated.] 91 
( 'orrelation of Stages of the lee Age in North America and 
Europe. Warren Upham. [Plates V and VI.] 100 
Editorial Comment. — Daemonelix or What?, 113. — Reconnoissance map 
of the United States, 113. 
Kereiic of Recent Geological Literature. — Evokition of Austraha, A. C. 
Gregory, 114. — Portland Cement, a monograph, C D. Jameson, 
115. — Origin and Use of Natural Gas at Manitou, Colorado, Wm. 
Striebly, 116. — Lead and Zinc Deposits of Missouri, Arthur 
WiNSLOw and J. D. Robinson, 118. — On some Dykes containing 
Huronite, A. E. Barlow, 119. — On Lawsonite. a new rock-forming 
Mineral from the Tiburon Peninsula, Marin Co., Cal., F. L. Ran- 
SOME, 119. — Post-Laramie Deposits of Colorado, 120. — Etude sur 
le Metamorphisme de contact des roehes volcaniques, A. LaCroix, 
122. — Etude mineralogique de la Iherzolite de Pyrenees et ses phe 
nomeues de contact. A. LaCroix, 122. — Peary Auxiliary Expedi- 
tion of 1894, Geology, T. C. Chamberlfn, 124. — Preliminary Re- 
port on the Physical Geography of the Litorina Sea, H. Munthe, 
126. 
Recent Publications, 127. 
Personal and Scientific Neivs, 129. 
SEPTEMBER NUMBER. 
Edward Hitehcoek. C. H. Hitchcock. [Portrait, Plate 
VII.] 138 
A Rational View of the Keweenawan. N. H. Winchell. 
[Illustrated.] 150 
The Mentor Beds, a central Kansas terrane of the Coman- 
che series, F. W. Cragin 162 
The Larval Stages of Trilobites. Charles E. Beecher. 
[Plates VIII to X.] 166 
Rerieu- of Recent Geological Literature. — Geological Survey of Canada , 
Annual Report (new series), vol. vi, for 1892-93, A. R. C. Selwyn- 
Director, 197. — Summary Report on the Operations of the Geolog- 
ical Survey [of Canada] for the year 1894, G. M. Dawson, Direc 
tor, 198. — Does the Delaware Water Gap consist of Two River 
Gorges?, Emma Walter, 200. — En resa till norra Ishafvet somma- 
ren 1892, Axel Hamberg, 200.— The Protolenus Fauna, G. F. Mat- 
thew, 200. 
Correspondence. — Recent Geological Work in South Dakota. J. E. 
ToDD, 202. 
Personal and Scientific Neivs, 203. 
OCTOBER NUMBER. 
The Synchronism of the Lake Superior Region with other 
l)ortions of the North American Continent. N. H. 
Winchell. [Plate XL] 205 
Brachiocrinus and Herpetocrinus. F. A. Bather '2iH 
