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628 By N. B. Wolfe, M.D. Chicago: Religio-philosophical Publishing House. Pp. 570.

Missouri University Report, 1875. Pp. 210.

Report on the Mineralogy of Pennsylvania. By F. A. Genth. Pp. 206.

The Physiological Reasons why. By A. Hutchins, M.D. Brooklyn: W. W. Swayne. Pp. 50.

The Genera Geomys and Thomomys. By Dr. E. Coues. Pp. 73.

Bulletin of the Buffalo Society of Natural Science. Vol. II., No. 4.

Mineral Deposits in Essex County, Mass. By C. J. Brockway. Boston: A. Williams & Co. Pp. 60. Price, 50 cents.

Fishes of Indiana. By D. S. Jordan, M.D. Pp. 42.

Reasons for embracing the Doctrines of Swedenborg. By Rev. G. Bush. New York: E. H. Swinney. Pp. 120.

Transactions of the American Society of Civil Engineers. May, 1875. Pp. 140.

Bureau of Education. Nos. 3 and 4, 1875. Pp. 108.

Melanosiderite. By J. P. Cooke, Jr. Pp. 11.

The Sun and the Earth, by Balfour Stewart; Force, by J. W. Phelps. Boston: Estes & Lauriat. Pp. 31. Price, 25 cents.

Insects of the Field. By E. S. Packard, Jr. Boston: Estes & Lauriat. Pp. 31. Price, 25 cents.



Sleep and Digestion.—Speaking from his own experience, which would appear to differ from the experience of other people, Frank Buckland asserts that the best time to go to bed is immediately, or very soon, after the principal meal of the day. "All animals," he remarks, "always go to sleep, if they are not disturbed, after eating. This is especially noticeable in dogs; and the great John Hunter showed by an experiment that digestion goes on during sleep more than when an animal is awake and going about." Mr. Buckland finds a 