Page:Popular Science Monthly Volume 39.djvu/285

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ommended by the Chemical Section of the American Association for determination of nitrogen in ammonium compounds, for nitrates and nitrites, and for oxygen-consuming power. Attention is called by the authors to the application of the Kjeldahl process in ascertaining the total organic nitrogen. The media and manipulation of biological examinations are amply treated, and a chart is given of the culture phenomena of the more important microbes. Much value is not attached, however, to the results thus obtained, since the number of microbes may vary greatly without analogous variation in the healthful character of the water. Ordinary filtration is shown to increase the micro-organisms, which develop finely in the pores of sand or stone filters. The Bischof and the Pasteur filters are to be preferred for household use, while the Anderson process of agitating the water with fine particles of cast iron in a rotating cylinder produces a water of high organic purity with great rapidity. The text is clear and well arranged, all required apparatus is illustrated, and useful analytical tables are furnished for comparison.


Agricultural Experiment Stations: Connecticut. Annual Report for 1890. Pp. 207; Bulletin on Milk and Cream. Pp. 14 — Delaware Soil and Crop Tests. Pp. 13; Injurious Insects and Insecticides. Pp. 13. — Kansas State Agricultural College. Oat Smut. Pp. 40. — Massachusetts. Treatment of Fungous Diseases. Pp. 12; Commercial Fertilizers. Pp. 8. — Michigan State Agricultural College. Beet Sugar. By R. Kedzie. Pp. 10; Six Worst Weeds. By W. J. Beal. Pp. 6, with specimens — New York. Fertilizers. Pp. 20. — Rhode Island. Bees. Pp. 20. — Utah. Potato Trials. Pp. 22.

Allen, Harrison. Description of a New Species of Bat. Smithsonian Institution Pp. 8.

Bedford. P. W., Editor. Pharmaceutical Record. Monthly. New York. Pp. 12.

Bigelow, H. R., M. D. Plain Talks on Electricity and Batteries. Philadelphia: Blakiston. Pp. 85.

Billings, Frank S., M. D. Original Research in Relation to Animal Economics. Philadelphia: American Medical Press Co. Pp. 39.

Branner, J. C. Relations of State and National Geological Surveys. Salem Press, Mass. Pp. 21.

Brinton, Daniel G. The American Race. New York: N. D. C. Hodges. Pp. 392. $2

Brooklyn Ethical Association, Evolution Series: Alfred Russel Wallace. By E. D. Cope. Pp. 17, with Portrait. Ernst Haeckel. By T. B. Wakeman. Pp. 36, with Portrait. The Scientific Method. By F. E. Abbot. Pp. 20. Herbert Spencer's Synthetic Philosophy. By B. F. Underwood. Pp. 40. Appletons. 10 cents each; $2.40 a year.

Camman, D. M. Diagnosis of Diseases of the Heart and Lungs. Putnams. Pp. 178. $1.75.

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Dunbar, Charles S. Chapters on the Theory and History of Banking. Putnams. Pp. 199.

Excelsior Publishing House, New York. The Devil's Visit (poem;. Pp. 448. $1.

Gill, Theodore. Note on the Genus Felichthis of Snauison. Pp 2.

Hale, E. M., M. D. The Condition of the Heart in Pneumonia. Pp. 8.

Hatch, F. H. Introduction to the Study of Petrology. Macmillan. Pp. 128. 90 cents.

Hay, O. P. Anatomy of Arophiuma. Boston: Ginn &, Co. Pp. 33, with Plate.

Herrick. F. II. Adelbert College. Notes on the American Lobster. Pp. 16.

Höffding, H. Outlines of Psychology. Translated by M. E. Lowndes. Macmillan. Pp. 365. $1.50.

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Illinois State Board of Health. J. H. Rauch, Secretary. Medical Education, etc., in the United States, Canada, and foreign Countries. Pp. 222.

Jordan. D. S. Fishes obtained in the Harbor of Bahia, Brazil. Smithsonian Institution Pp. 24.

Lankester, E. Ray, and others. Zoölogical Articles contributed to the Encyclopædia Britannica. Scribners. Pp. 195. $5.

Lucas, F. A. Osteology of the Paridæ, Sitta, and Chamæa. Smithsonian Institution. Pp 12, with Plate.

Maxwell, W. H. Advanced Lessons in English Grammar. American Book Co. Pp. 327. 60 cents.

Meyer, Annie Nathan. Woman's Work in America. New York: Henry Holt & Co. Pp. 457.

Miller, S. A. Lower Carboniferous Crinoids from Missouri. Jefferson City. Pp. 40, with Plates.

Morrison-Fuller, J. To-day. Weekly. Pp. 16. 5 cents. $1 a year.

Müller. F. Max. Physical Religion. Longmans Green & Co. Pp. 410.

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Ott, Isaac. M. D. The Modern Antipyretics. Easton, Pa.: E. D. Vogel. Pp 52.

Palmer, E. R., M D. Valedictory Address. Louisville. Ky.: J. P. Morton & Co. Pp. 24,

Phillips, J H and others. Editors. Educational Exchange. Birmingham, Ala.: Solomon Palmer. Pp. 44.

Quackenbos. John D., and others. Editors. Appletons' School Physics. American Book Co. Pp. 544. $1.20.

Ripley, C. B. Improved Roads. Trenton, N. J. Pp. 53.

Robins, Rev. J. B. Christ and our Country. Dalton, Ga.: Ainsworth Brothers. Pp. 141. 75 cents.

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Shufeldt. R. W. Camera Notes for Ornithologists. Pp. 4.

Smith, Roderick n. A New Business in Wall Street. Pp. 85.

Smithsonian Institution. Report for 1888-'89. Washington Pp. 815.

Staunton Development Company. Staunton, Va. Pp. 74, with Plates.

Taylor, Hancis. The Freedom of the Press: Argument in a Lottery Case. Pp. 78.

Whitfield, R. P. Contributions to Invertebrate