B96 The American -Geologist. nccombiT, i895 
The lead and ziuc mining- iudustry oi southwest Missouri and south- 
east Kansas. John R. Holibaugh. 8x0,54 pp., and map: New York, 
The Scientific Publishing Co., 1895. 
Descrixjtion of eight new species of fossils from the (Galena) Trenton 
limestones of lake Winnipeg and the Red River valley, J. F. Whiteaves. 
11 pp.: reprint from Canadian Ree. Sci., July, 1895. 
Die krystallisirten Mineralien aus dem "Galena Limestone" des 
siidliehen Wisconsin und des nordlichen Illinois, W. H. HoV)bs. 
Zeitschrift f. Krystallogr., xxv, 257-275, Taf. 3-5, 1895. 
Mount Shasta, a typical volcana, J. S. Diller. Nat. Geographic 
Monographs, vol. 1, no. 8, pp. 237-268, Oct., 1895. 
The dyke on the Columbia vein in Ward district, Boulder Co., Colo., 
C. S. Palmer and W. B.Stoddard. Gpp.: read before Colo. Sci. Soc, 
Oct. 7, 1895. 
V. Proceed iiKjs of Sciciiiijic Lohorcdories, etc. 
Johns Hopkins Univ. Circulars, Oct. Description of the geological 
excursions made during the spring of 1895, W. B. Clark: Two new 
brachiopods from the Cretaceous of New Jersey, W. B. Clark: Contri- 
butions to the Eocene fauna of the middle Atlantic slope, W. B. Clark; 
Additi<mal observations upon the Miocene (Chesapeake) deposits of 
New Jersey, W. B. Clark: Notes on some flattened garnets from North 
Carolina, E. B. Mathews; A contribution to the Neocene corals of the 
United States. H. S. Gane; The spotted slates associated with the Sioux 
quartzite, S. W. Beyer: The Cretaceous Foraminifera of New Jersey, 
R. M. Bagg: The volcanic series of Fox islands, Maine, G. O. Smith; 
A preliminary note on the geology of Massanutten mountain in Vir- 
ginia, A. C. Spencer: Preliminary descrijjtion of the geology of the Bor- 
dentown sheet of the geologic atlas of the United States, G. B. Shat- 
tuck: The discovery of fossil tracks in the Newark system (Jura-Trias) 
of Frederick county, Md., J. A. Mitchell: Note on the Cretaceous for- 
mations of the eastern shore of Maryland, D. E. Roberts: Notes on the 
paleontology of the Potomac formation, Arthur BibV)ins. 
CORRE SPON DENCE. 
Dk. Holst on the Continuity of the Glacial Period. The Geo- 
logical Survey of Sweden has just published an important paper (No. 
1.51) by Dr. N. O. Hoist, entitled "Har det funnits mera an en Istid i 
Sverige?" ["Has there been more than one Ice Age in Sweden?"], in 
which Dr. Hoist intimates that fashion has had much to do with intro- 
ducing and supporting the theory of two ice ages in Scandinavia. After 
detailing the subdivisions of the glacial advance and retreat which by 
some geologists are confidently attributed to distinctly separate glacial 
epochs, he maintains that the facts have been greatly misinterpreted 
and that he finds no sufficient evidence of successive and distinct ice- 
sheets or epochs of glaciation. 
Much weight attaches to what Dr. Hoist writes about American facts, 
inasmuch as he traveled extensively in this country in 1891, and was 
conducted to the critical points of glacial investigation by Prof. Salis- 
