Recent Publications. 273 
erence of the lamination which has marked their formation to a power- 
ful lateral pressure acting from the south toward the north. 
RECENT PUBLICATIONS. 
1. State and Government reports. 
Eighth annual report of the state mineralogist of California, for the 
year ending Oct. 1, 1888. William Irelan, Jr., 8vo, 948, pp. California 
state Mining Bureau. 
First report of the State Forestry Commission of Michigan, 1887 and 
1888. 8vo. 90 pp. with plates and text illustrations. W. J. Beal and 
Chas. W. Garfield, Agrl. College, Lansing. 
Bulletin from the Laboratories of Natural History of the State University 
of Iowa. Vol. 1, No. 1, 96 pp. 8vo; contains. Some geological problems 
in Muscatine county, Iowa, by Prof. S. Calvin (published in the Feb. 
Geologist) ; Notes on the synonymy, characters and distribution of 
Spirif era parry ana Hall, by the same ; and Description of a new species 
of Spirifer from the Hamilton group, near Iowa City, also by Prof. 
Calvin. It also contains botanical and zoological papers by McBride, 
Hitchcock, Shimek and Wickham. 
Bull. No. 46, U. S. Geol. Sur. Nature and origin of deposits of 
phosphate of lime. R. A. F. Penrose. 143 pp. maps and text illustra- 
tions. 
Sixteenth annual report of the Director of the mint. J. P. Kimball. 
1888. 
Sixteenth annual report of the Geological and Natural History Sur- 
vey of Minnesota, for the year 1887. N. H. Winchell, state geologist. 
2. Proceedings of scientific societies. 
The Journal of the Cincinnati Society ofNattiral History, vol. xi, No. 
4, contains an acccount of a human skull (the Riverside skull) found 
in connection with remains of an elephantine tusk two or three miles 
below the city in the terrace gravel of the river. By Dr. A. J. Howe. 
The proceedings of the Acad. Nat. Sci., Phil. Part iii, 1888, contains 
among other papers, Megalonyx Jeffersonii, by Joseph Leidy; Addi- 
tional observations on the structure and classification of mesozoic 
mammalia, by H. F. Osborn ; Discovery of the ventral structure of 
Taxocrinus and Haplocrinus, and consequent modifications in the 
classification of the crinoidea, and Crotalocrinus, its structure and 
zoological affinities, by Wachsmuth and Si-ringer. (Reviewed in the 
Geologist, Mar. 1889.) Theories of the formation of coral islands, by 
Charles Morris. 
3. Papers in Scientific journals. 
Am. .Tour. Sci., Feb. No. Points in the geological history of the 
islands Maui and Oahu. Two plates. J. D. Dana. Occurrence of 
Monazite as an accessory element in rocks. Orville A. Derby. 
Geology of Fernando de Noronha. Part i. John C. Branner ; with a 
