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search. Three of these are by F. H. Storer, Professor of Agricultural Chemistry, and are of direct and practical value. One is a "Record of Trials of Various Fertilizers upon the Plainfield of Bussey Institution," another is a "Report on some Analyses of Salt-Marsh Hay and Bog-Hay," and the third one is on the "Fodder Value of Apples." In this last one Prof. Storer says that, while apples contain a very small percentage of nitrogenous matter, they are not to be over-looked as a food for cattle and swine, and should be used with peas, beans, oil-cake, or other highly-nitrogenized food.

An able article is contributed by Prof. Farlow on "Potato Rot," which is illustrated, and one by Prof. Slade on "The Importance of the Study of Applied Zoölogy to the Practical Agriculturist."

Second Geological Survey of Pennsylvania, 1874. Preliminary Report on the Mineralogy of Pennsylvania. By F. A. Genth. With an Appendix on the Hydrocarbon Compounds, by Samuel P. Sadtler. Harrisburg: Published by the Board of Commissioners for the Second Geological Survey, 1875.

This report by Prof. Genth, to be followed by a thorough work on the mineralogy of the State, is an excellent hand-book of the minerals of Pennsylvania, and of their localities. Most of the minerals of the State are fully and clearly described, and their analyses, many of which are new, are given. The system of classification adopted is that of Prof Dana, and the report, although submitted as a preliminary one, is indispensable to every student of the mineralogy of Pennsylvania. The report contains a topographical map of the State, and its general thoroughness is shown in its elaborate index.




The Better Way: an Appeal to Men. By A. E. Newton. New York: Wood & Holbrook. Pp. 48.

Primer of Political Economy. By A. B. Mason and J. J. Lalor. Chicago: Jansen, McClurg & Co. Pp. 67. Price, 75 cents.

Views and Interviews on Journalism. By Charles F. Wingate. New York: F. B. Patterson. Pp. 3/2.

Geological Survey of Indiana, 1874. By E. T. Cox. Pp. 287. Four Maps.

German Classics. Die Piccolomini; edited by J. M. Hart. New York: Putnams. Pp. 250. Price, $1.25.

Contributions to the Laboratory of the Missouri State University. By P. Schweitzer, Ph.D. Pp. 38.

Notes on Certain Explosive Agents. By W. N. Hill, S. B. Boston: John Allen. Pp. 71. Price, $1.00.

Accidents, Emergencies, and Poisons. Pp. 126. Also, Care of the Sick. Pp. 72. Published for free distribution by the Mutual Life Insurance Company of New York,

Preventive Medicine. An Address. By Charles C. F. Gay, M.D. Pp. 12.

The Clinical Thermoscope. By E. Seguin, M.D. Pp. 8. New York: Putnams.

Pseudomorphs of Chlorite after Garnet. By R. Pumpelly. With a Plate. Pp. 4.

Affairs at Red Cloud Agency. By Prof. O. C. Marsh. Pp. 38.

Proceedings at the Eighth Annual Meeting of the Free Religious Association. Boston: Cochrane & Sampson. Pp. 79. Price 35 cents.

Bacteria. By L. A. Stimson, M. D. New York: D. Appleton & Co. Pp. 34.

Examination of Gases from the Meteorite of February 12, 1875. By A. W Wright. Pp. 6.

Report on Trichinosis. By G. Sutton, M.D. Pp. 23.

Catalogue of American, British, German, and French Periodicals. New York: E. Steiger, 22 Frankfort Street. Pp. 16.

On a Fœtal Manatee and Cetacean. By Prof. B. G. Wilder. Pp. 11.

The Age of Ice in Britain. By Prof. Geikie. Pp. 32. Also, Insects of the Forest. By A. S. Packard, Jr. Pp. 32. Boston: Estes & Lauriat. Price, 25 cents each.



Detroit Meeting of the American Association for the Advancement of Science.—The American Association for the Advancement of Science met at Detroit, August 11th, and remained in session a week. Less than the