Review of Rece?it Geological Literature, 123 
kaline-magma and the era of activity is terminated b}' basi': 
pioducts. 
Note. — In the foregoing the wTiter has aimed to give only 
the views of the author. It may be added that the method 
of dififerentiation adopted by the author varies but httle from 
the "crenitic" hypothesis of Hunt, differing principally in the 
"locus" of the operation. The author supposes the changes 
to transpire in deepseated reservoirs, and Hunt at or near the 
surface of the earth. n. h. \v. 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
The Physical Geography of New Jersey, By Rollin D. Salisbury, 
With Appendix, by Cornelius Clarksox Vermeule. (Vol. IV of the 
Final Report of John C. Smock, State Geologist.) Pages xvi, 170, 200; 
with a relief map, 24 plates (maps, profiles, and views from photographs), 
and 37 figures in the text: Trenton, N. J., 1898. 
The first division of this report, in 170 pages, by Prof. Salisbury, 
treats of the topographic features of the state, and reviews their geo- 
logic origin from the close of the Triassic period to the present time, 
including alternate uplifts and depressions, with their attendant cycles 
of erosion and deposition. The earliest evidences of glaciation, during 
the Pensauken epoch, long preceded the deposition of the chief terminal 
■moraine and of the principal mass of glacial drift. The second division, 
an appendix of 200 pages, comprises valuable reference tables and 
notes, compiled by Mr. Vermeule, pertaining to physical geography, 
county areas, population, and magnetic declination. w. u. 
Northward over the ''Great Ice:" a Narrative of Life and Work 
along the Shores and upon the Interior Ice cap of northern Greenland in 
r886 and iSgi-gy ; with a description of the little tribe of Smith Sound 
Eskimos, the most northerly human beings of the world, and an account 
'of the discovery and bringi7ig home of the "Saviksue," or great Cape 
York Meteorites. By Robert E. Peary. With maps, diagrams, and 
about 800 illustrations. Two volumes: I. Pages Ixxx, 521. II. Pages 
xiv, 625. New York: Frederick A. Stokes Co., 1898. 
The comprehensive title page of this most admirable work indicates 
quite fully its contents, which include extensive observations of high 
geologic, meterologic, and ethnographic value. The story of courage- 
ous accomplishment of well laid plans of exploration on the ice-sheet 
and northern shores of Greenland, surmounting many difhculties and 
intense hardsliips, is very unostentatiously related. The illustrations 
