190 
The American Geologist. 
March, 189© 
rence of earlier and later flows of lava as evidenced by the superposition, 
of the dense lower material of a later sheet on the light vesicular upper- 
part of an earlier one. e. w. c. 
RECENT PUBLICATIONS. 
I. Government and State Reports. 
Geol. Sur. of N. J., Ann. Rept. for 1894. Surface geology—report of 
progress. R. I>. Salisbury; Report on artesian wells in southern New 
Jersey, Lewis Woolman. 
Geol. Sur. of Canada, Contr. to Can. Palaeon., vol. 2, pt. 1, 1895. Ca¬ 
nadian Fossil Insects (Myriapods and Arachnids), S. H. Scudder: The 
Tertiary Hemiptera of British Columbia: The Coleoptera hitherto found 
fossil in Canada: Notes on myriapods and arachnids found in sigillarian 
stumps in the Nova Scotia coal field. 
Instituto Geologico de Mexico Boletin 2. Las rocas eruptivas de sur- 
oeste de la Cuenca de Mexico, Ezequiel Ordonez. 46 pp., 1895. 
U. S. Geol. Survey, Bull. 123. Contributions to the Cretaceous pale¬ 
ontology of the Pacific coast: The fauna of the Knoxville beds, T. W. 
Stanton. 132 pp., 20 pis., 1895. 
II. Proceedings of Scientific Societies. 
Bull. Am. Geog. Soc., vol. 27, no. 4, 1895. The development of the- 
geologic atlas of the United States, Bailey Willis; Topography and scen¬ 
ery of northern India, H. M. Wilson. 
Proc. Alabama Indust. & Sci. Soc., vol. 5, 1895. Alabama barite or 
heavy spar, Henry McCalley; Alabama’s resources for the manufacture 
of Portland cement, E. A. Smith. 
Jour. Elisha Mitchell Sci. Soc., vol. 12, pt. 1, 1895. Notes on the un¬ 
derground supplies of potable waters in the south Atlantic Piedmont 
plateau, J. A. Holmes. 
III. Papers in Scientific Journals. 
Ottawa Naturalist, Jan. Erythrite, stilpnomelane var. chalcoditef 
crystallized monazite and pleochroic apatite from some Canadian local¬ 
ities, W. F. Ferrier: Notes on some fossils from the Trenton of Highgate 
Springs, Vermont, near the Canadian boundary line, H. M. Ami. 
Science, Jan. 10. The Geological Society of America, J. F. Kemp; 
Current notes on physiography, W. M. Davis. 
Science, Jan. 17. A gigantic orthoceratite from the American Car¬ 
boniferous, C. R. Keyes. 
Science, Jan. 24. Current notes on physiography, W. M. Davis. 
Science, Feb. 7. Memorial address on J. D. Dana, J. W. Powell; 
Current notes on physiography, W. M. Davis. 
Amer. Naturalist, Feb. Some localities for Laramie mammals and 
horned dinosaurs, J. B. Hatcher. 
Amer. Jour. Sci., Feb. Notes on sperrylite, T. L. Walker; Glaciation 
of Pocono Knob and Mounts Ararat and Sugar Loaf, Pennsylvania, H. 
B. Kummel; Fayalite from Rockport, Mass., and on the optical proper- 
