Barometric Waves of Very Short Period, pp. 11; Electric Potential and Gaseous Pressure, pp. 4. By H. M. Paul, Washington, D. C.
Proceedings of the Central Ohio Scientific Association. Urbana, Ohio. Pp. 17, with Plates.
Proceedings, etc., of the Kentucky State Sanitary Council, March, 1884, J. N. McCormack, Secretary. Bowling Green, Ky. Pp. 60.
Meteorites, pp. T; The Argillite and Conglomerate of the Boston Basin, pp. 4; Relation of the Quincy Granite to the Primordial Argillite of Braintree. Mass., pp. 5; On the Trachyte of Marblehead Neck, Mass., pp. T; Rocks and Ore Deposits in the Vicinity of Notre Dame Bay, Newfoundland, pp. 11; On the Classification of Rocks, pp. 12; Geological Exploration of the Fortieth Parallel, pp. 32; The Fortieth Parallel Rocks, pp. 20; Atmospheric Action on Sandstone, pp, 2. By M. E. Wadsworth, Harvard University.
Equalizing and increasing our Country's Resources. By John E. Lomas. New Haven, Conn. Pp. 4.
Indian Money as a Factor in New England Civilization. By William B. Weeden. Baltimore: N. Murray. Pp. 51. 50 cents.
Reports from the Consuls of the United States on Commerce, Manufactures, etc. Washington: Government Printing-Office. Pp. 179.
A New Method of recording the Motions of the Soft Palate. By Harrison Allen, M.D. Philadelphia: P. Blakiston, Son & Co. Pp. 34.
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Handbook for the Dominion of Canada. By S. E. Dawson. Montreal: Dawson Brothers. Pp. 835.
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Illinois State Board of Health. Fifth Annual Report. Springfield, Ill.: H. W. Rokker. Pp. 663.
The Orchids of New England. By Henry Baldwin. New York: John Wiley & Sons. Pp. 159, with Plates.
Report of the Board of Regents of the Smithsonian Institution, 1882. Washington: Government Printing-Office. Pp. 855.
Text-Book of Medical Jurisprudence and Toxicology. By John J. Reese, M. D. Philadelphia: P. Blakiston, Son & Co. Pp. 606.
The Amazon. By Carl Vosmar. New York: William S. Gottsberger. Pp. 262.
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The Wind and the Whirlwind. By Wilfrid S. Blimt Boston: Benjamin E. Tucker. Pp. 30.
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Elements of Analytical Geometry. By Simon Newcomb. New York: Henry Holt & Co. Pp. 356. $1.50.
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Fallacies in "Progress and Poverty." By William Hanson. New York: Fowler & Wells Company. Pp. 191. $1.
Cholera and its Preventive and Curative Treatment. By D. N. Ray. New York: A. L. Chatterton Publishing Company. Pp. 128.
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Formation of Poisons by Micro-organisms. By G. V. Black, M.D., D.D.S. Philadelphia: P. Blakiston, Son & Co. Pp. 173. $1.50.
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"Journal of the Academy of Natural Sciences of Philadelphia." Second Series, Vol. IX, Part 1. Pp. 154, with Plates.
The Warmest Month.—M. E. Renou remarks, in the "Annuaire" of the French Meteorological Society, that throughout the northern temperate zone the maximum of temperature occurs, as a rule, in July. In the corresponding zone on the other side of the equator the maximum comes in January. Between these two zones, or at the equator, the epoch of maximum falls at various dates, according to the storms that rule in the region. They are not so important there as in the other regions, for the difference between the coolest and the warmest month is little at the most. A curious law seems. to prevail in the distribution of the maximum. In North America the warmest month is almost universally July; but in the southern regions of that continent it occurs in August. In the Antilles it may be looked for in September, and at Cayenne in October. Passing through South America, before reaching the latitude where it comes in January, we find countries where it occurs, in November and then in December. The maximum is found in January through all the southern part of that continent and in Chili. In Peru it occurs in March; there is, therefore, a region between Peru and Chili where it must be looked for in February. North of Lima it is found in April, and farther north in May. Finally, it comes in June as we approach Sonora, and in July in California, where we are brought back in the returning circle to our starting-point. Between Cayenne and Peru we shall evidently find places in which the maximum moves from October into November, etc., and at last into March. In the Gulf of Mexico we may also remark a rapid variation in the time of the maximum temperature as we go from east to west. A similar distribution, marked by the same peculiarities, is noticeable in the Old World. The