IV Contents. 
Lake Superior. Frank Leveuett. [Plate V.] Ill 
Editorial Comment. — Light in the East, 128. 
Review of Recent Geological Literature. — Geological Survey of Canada, 
Annual Report 1895, 130. — Extrusive and Intrusive Igneous Rocks 
as Products of Magmatic Differentiation, J. P. Iddings, 132. — On 
the Southern Devoniai. Formations, H. S. Williams, 133.^ — The 
Newark System, Report of Progress, HENEiY B. KOmmell, 131. — 
Observations on Pope epetl and Ixtaccihuatl. with a Review of 
the Geographic and L.eoiogic Features of the Mountains, Oliver 
G. Fakkington, 135. — The Fuller's Earth of South Dakota, Hein- 
RiCH RiEs, 135. —The Twenty-first Annual Report of the Depart- 
ment of Geology and Natural Resources, Indiana, W. S. Blatch- 
LEY, 135. -The Building Materials of Pennsylvania, I, Brown- 
stones, T. C. Hopkins, 136. — Development and Mode of Growth 
of Diplograptus, McCoy, R. Ruedemann, 136. — Artesian 
Wells in Southern and Northern New Jersey, and in the Creta- 
ceous Strata of Long Island, Lewis Woolman, 136. — The Cretace- 
ous Clay Marl Exposure at Clifford, N. J., Arthur Hollick, 137. 
Personal and Scientific Neivs, 137. 
SEPTEMBER NUMBER. 
The Margin of the Cornell Glacier. Ralph S. Tare. 
[Plates VI-XII.] 139 
Note on Hypersthene-Andesite from Mt, Edgecumbe, 
Alaska. H. P. Gushing 156 
Some Geological Causes of the Scenery of Yellowstone 
National Park. A. R. Crook 159 
Dual Character of the Kinderhook Fauna. C. R. Keyes. 167 
The Preglacial Cuyahoga ValleJ^ S. J. Pierce. [Plate 
XIII.] : 176 
Editorial Comment. — The Missouri Geological Survey, 181. 
Review of Rr cent Geological Literature . — Geological Survey of Mexico, 
181. — Paleontologiska Notiser, G. Holm. — Paleozoic Fossils, Vol. 
Ill, Pt. Ill, 4, The Fossils of the Galena-Trenton and Black 
River Formations of Lake Winnipeg and its Vicinity. J. F. Whit- 
eaves, 187.-The Morphology of the Graptolites, 188.— The Bulle- 
tin of the Museu Paraense, 189.— Neber Dictyonema cavernosum, 
n. sp., K. Wtman, 189. — Kambrisch-silurische Faciesbilgungen in 
Jemtlaud, K. Wiman, 190. 
Recent Publications, 190. 
Gorresp'yndence. — American Association for the Advancement of Sci- 
ence, 199. — International Geological Congress, E. W. Claypole. 
202. 
Personal and Scientific Neivs, 203. 
OCTOBER NUMBER. 
Sketch of the Life of Michael Tuomey. [Portrait.] Eu- 
gene A. Smith 205 
Oscillations of the Coast of California during the Pliocene 
