148 Scientific Intelligence. 
The last paper in the present volume is the author’s Lecture on Mental 
Education, in which he develops with vigorous.thought his views on 
some of the popular delusions of the day. 
II, GEOLOGY. 
1. Third Report on the sa gaa Survey of South Carolina ; by 
Oscar M. Lizper. 224 pp. 8vo. Columbia, 8.C. Price of each Re- 
port 50 cents.—This Report treats particularly of Greenville and Pickens | 
Districts. It gives information respecting the topography of the region, 
and the veins and metamorphic and eruptive rocks, and illustrates the 
distribution of the rocks on colored maps. A large part of the Report 
is occupied with a treatise on Itacolumite and the associate rocks, and 
their connection with the occurrence of gold. The associate rocks are 
own 
2. Geological Survey of Canada ; Sir W. E. Locay, F.R.S., Director: 
Figures and eed eas of Canadian Organic Remains. Decades I, and 
IV. 48 and 72 pp. 8vo, each with 10 plates.- Montreal, 1859. B. Dawson. 
—The publication of the third Decade on the Organic Remains of Canada 
was announced in our last volume. Quite recently Decade I. has ap- 
peared in similar style, and with exquisite steel-plate engravings. ‘This 
number is by the paleontologist Mr. J. W. Salter of London, while the 
engravings are by Mr. Sowerby. It takes up a portion of the Lower Si- 
Jurian mollusks ‘and illustrates the genera and species with great skill, 
bringing out much that is new respecting them. It hs gg finely the 
Maclurea Logani with its operculum, species of Ophileta, Raphistoma, 
Murchisonia, Cyclonema, Loxonema, Oyrtoceras, ofiiseaha (Hall’s Tel- 
linomya, this name being changed with good reason because the species 
are related not to Tellina or Mya, but to Saat ‘ai others. There is one 
plate devoted to two species of Receptaculite 
ecade IV. also has just been issued. It i is devoted to the "Crinoids of 
the Lower Silurian, and is by Mr. E. Billings. Like the Decade on the 
Cystids it shows great success in the collection and study of the Canada 
Echinoderms. About fifty species are here included, five of which belong 
to the Chazy, and the rest to the mars Black River, Trenton, and 
Hudson River terinations. The most rem e species are certain forms 
of the Chazy, Pentremite-like in preteens ron which the genus Blasto- 
idocrinus is instituted. Another new genus of the Chazy is called Pale 
—_— ——— P. striatus. It has five radiating ambulacral groove 
on the su A second of the same rock is called Hybocrinus; # 
four are Bence bed from the Trenton. The species are well illustrated 
th lithographic plates. 
j of the Mexican SS Survey—tThe first volume of 
any Survey Report contains Geological Reports by Dt 
23 
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