Review of Recent Geological Literature. 329 
(gen. C'^(<^/?rt«;>;'.v) on the soiitlieast coast of Gotland in the Baltic sea. It 
is from the oldest beds of clay slate in Gotland, equivalent to the Wen- 
lock and thus older than the pteraspidian fishes of the Baltic provinces 
of Russia, or those found in Galicia. He considers Pander's conodoiits 
of the Russian Cambrian greensand are not fish-remains, and he thinks 
that the fish-remains from North America referred to the Lower Silurian 
are not so old, because they are quite Devonian in type. o. F. m. 
A Preliminary Report on tJie Marbles of Georgia. By S. W. McCallie. 
(Geol. Sur. of Ga., Bull. No. 1, 92 pp.. U pis., 2 maps; 1894.) This is the 
first report which has been issued since State Geologist Yeates has had 
charge of the survey. The marble beds occur in the belt of crystalline 
rocks which crosses the northern i)art oi the state. Descriptions of the 
various quarries and exposures are given in some detail. The report is 
devoted almost entirely to the economic aspects of the subject, and com- 
paratively little is stated concerning the geology of the region in which 
the marble occurs. u. s. g. 
Geological Survey of New Jersey, Annual Report for 1S93. By John C. 
Smock. State Geologist. 4.')7 pages; 5 majis; 10 plates; and 28 figures in 
the te.\t. (Trenton, 1894.) After the administrative report of the state 
geologist, comprising 29 pages, this volume contains a report on the 
surface geology, bj- Prof. R. D. Salisbury, nearly 300 pages; on the 
Cretaceous and Tertiary geology, by Prof. W. B. Clark, 25 pages; on 
the structure of the Archean rocks in the vicinity of Hibernia, N. J., and 
their relation to the ore deposits, b}' J. E. Wolff, 11 pages; on water 
supply and water-power, by C. C. Vermeule. 1.3 pages; on artesian 
wells in southern New Jersey, by Lewis Woolman, 33 pages; and on 
the minerals of the state, with notes of mineral localities, 20 pages. 
An abstract of the first section of Prof. Salisbury's report, treating of 
the Yellow Gravel series, has been given in the last March Am. Geolo- 
gist (pp. 203. 204). The second section treats of the extra-morainic 
drift, and is accompanied by a map, which, with the text descriptions, 
admirably' displays the evidence of extensive erosion and a long time in- 
terval between the oldest deposits of drift and the moraine which lies 
somewhat farther north upon or near the margin of the newer drift. 
This moraine is more exactl}- mapped and described than in previous 
reports. Another section describes kame terraces, laid down in valleys 
that were still partly occupied by the departing ice. The glacial strise 
and drift of the Palisade ridge, which rises steeply on the west side of 
the Hudson river north of New York and Jersey City, are of special in- 
terest in showing that a general current of the ice-sheet passed from 
northwest to southeast across the highland. 
A very thorough exploration, chierty by Mr. H. 1>. Kv.mmel, of the 
shores, deltas, and other proofs of the ice-dammed lake Passaic, is elab- 
orately reported, with a special map. The lake area extends about 30 
miles from southwest to northeast. Its old shore-lines have an ascent 
of 2.3 feet in the first six to ten miles from the southern end; in the 
next ten miles there is an ascent of 15 feet; and in the last ten miles 
