METEOROLOGY. 533 



Meteorological records, Dike of Bedford and S. U. Pickering (Rpt. Wdburn 

 Expt. Fruit Farm, 1897, pp. 175-1S0). — Monthly summaries of observations on tem- 

 perature, radiation, humidity, and rainfall for 18 months beginning July, 1895, are 

 reported. 



Meteorology, P. Boname (Rap. An. Sta. Agron. [Mauritius'], 1896, pp. 1-7). — 

 Monthly summaries of observations during 1896 on. temperature, pressure, humidity, 

 and precipitation. 



Rainfall of the United States, with annual, seasonal, and other charts, A. J. 

 HENRY (U. S. Dept. Agr., Weather Bureau Bid. J), pp. 58, pis. 3, charts 11). — "The 

 facts and conclusions presented in this report have been drawn from the longest and 

 at the same time the most reliable rainfall registers in the United .States; the aver- 

 ages have been compiled to the end of 1896." The rainfall of the crop-growing 

 season is treated separately and the area under discussion has been divided into 

 rainfall districts according to their natural boundaries. 



Amount and composition of rainfall, 1895-'96 (Bpt. Expt. Fields Dodds Reform. 

 [Barbados], 1896, p. 1).— The total amount of rainfall and the parts per million of 

 chimin, total nitrogen, nitrogen as ammonia, and nitrogen as nitrates in rainfall col- 

 lected from November, 1894, to March, 1896, are tabulated. 



A new form of evaporimeter, Duke of Bedford and S. ('. 1'ickering (Bpt. 

 Wdburn, Expt. Fruit Farm, 1897, )>p. 168-174, fig. 1). — "In devising a new form of 

 instrument it has been our object to adopt a form in which the surface from which 

 evaporation occurs shall be as nearly as possible analogous in position to the leaves 

 of a tree. 



"The moist surface consists of a sheet of tough blotting paper, filter-paper, or 

 linen, measuring 100 by 50 mm. (about I by 2 in.), held vertically by means of a 

 movable copper frame in a vessel of water fitted with a graduated side tube. The 

 sheet of paper or linen ends in a tongue, which dips into the w ater, and is thus kept 

 moist. The graduations are such that they give the number of units of volume 

 evaporated per unit area of paper exposed. Thus, a fall of 0.24 shows that 0.2-1 cc. 

 or cubic inches has evaporated from each square centimeter or square inch of the 

 paper." 



Tests of the accuracy of this apparatus using different kinds of paper are reported. 



The equations of hydrodynamics, J. COTTIER ( U. S. Dept. Agr., Weather Bureau, 

 Doc. ISO, pp. 8, figs. 3). — A discussion of equations of hydrodynamics applicable to 

 problems connected with the movements of the earth's atmosphere, reprinted from 

 from the Monthly Weather Review for July, 1897. 



A study of the normal variation in the electric field with the elevation, in the 

 upper regions of the atmosphere, Gr. le Cadet ( Compt. Rend. Acad. Sei. Paris., 115 

 (1807), No. 14, pp. 494-490). 



Recent studies on tempests, cyclones, or tornadoes, II. Faye (Pari* : Gauthier- 

 Villars, 1897, pp. 142). 



The extreme temperatures of Finland (Rer. Sei. [Port*], 4. ser., 8 (1897), No. 17, 

 p. 535). 



The story of the atmosphere, D. Archibald (New York: D. Appleton $■ Co., 

 1897, pp. 194,fujs. 43). — This is one of The Library of Useful Stories issued by these 

 publishers, which is "a series of little books dealing with various branches of use- 

 ful knowledge and treating each subject in clear concise language as free as possible 

 from technical words and phrases, by writers of authority." The present volume 

 treats of the main features of the conditions which prevail in the atmosphere. The 

 subject of weather and the description of instruments are omitted and climate is 

 only brielly touched upon, A chapter is devoted to the subject of flight. 



