Brief and incomplete as a text-book of meteorology, but containing a very comprehensive account, fully illustrated, of rivers and floods in the United States, and their prediction.

Elementary Meteorology. Frank Waldo. New York, American Book Company, 1896. 8vo, pp. 373. 90 cents.

A compact summary. Useful to teachers as a handy reference book.

Modern Meteorology. Frank Waldo. New York, Charles Scribner’s Sons, 1893. 8vo, pp. 460. $1.25.

Very complete account of meteorological apparatus and methods, and admirable summary of recent German studies of the thermodynamics and general motions of the atmosphere.

C. Instructions in the Use of Instruments.

Instructions for Voluntary Observers. 1899. 8vo, pp. 23. Brief instructions for taking and recording observations of temperature and precipitation with ordinary and maximum and minimum thermometers and with the rain gauge.

Barometers and the Measurement of Atmospheric Pressure. C. F. Marvin. 1894. 8vo, pp. 74. A pamphlet of information respecting the theory and construction of barometers in general, with summary of instructions for the care and use of the standard Weather Bureau instruments.

Instructions for Obtaining and Tabulating Records from Recording Instruments. 1898. 8vo, pp. 31. Contains directions concerning the care and use of the Richard thermograph and barograph.

Note.—These pamphlets are prepared under the direction of Professor Willis L. Moore, Chief of the United States Weather Bureau, and are published, under authority of the Secretary of Agriculture, by the Weather Bureau. They will be found the best guides in making observations, the care of instruments, etc.