METKOROT.OCY WATER. 813 



which produce tlic .•iI)()vo (lirfcrcncc in tlic rolalivc i)rop()rtion of oivatinin mikI 

 crcatin." 



Agricultural chemistry during the second half year of 1906, \V. Ziel- 

 STOKFi'' {('licin. Ztuchr., (I {l!>()7), Xo. '/, /;/>. (;.7-7Y>). — Uecciit iiivostiuatioiis relat- 

 ing to the nutrition of plants and animals are brietly reviewed. 



Abstracts from current literature upon industrial chemistry, F. 11. Tiiuiu' 

 (Jour. Anicr. Cliem. Soc, 29 {1907), No. 3, pp. 3 'i9-382) .—The part of this 

 review of special interest to agriculture is that relating to the literature of 

 electro-chemical fixation of nitrogen, fats and oils, fermentation, foods, sugar, 

 and f(>rtilizers (silica as a plant food). 



Pi'ogress in cellulose chemistry, W. Vieweg {Cheni. Ztf/., 31 {1901), No. 8, 

 pp. 8.1-87). — A suuunar.v of recent literature on the cheinistr.v of cellulose. 



The present development of the analysis of tanning materials, II. R. 

 ruocTER and 11. G. Bennett {Jour. Soc. Chciii. Incliis., 2(i {1907), No. 3, pp. 79, 

 SO). — This discusses the prei)aration of hide powders and gives the details of a 

 method for the determination of tannins which, it is urged, should be adopted 

 by the associations interested in this work. 



Annual report of the government analyst for 1905-6, P. Carmody {Ann. 

 Jipt. Govt. Analijxt [I'riiiiddd], 190.J-6. pp. 16). — The report includes analyses 

 of milk, a grass {Rottboellia exaltatu) considered of some agricultural impor- 

 tance, banana stalks, a weed known as cane killer {Alectra hraziUeiiisl>i), water, 

 rum, and other materials. 



Van Nostrand's chemical annual, 1907, edited by J. C. Olsen {New York: 

 1). ]'(iii Nostnitid Co.. 1907. pp. X-'r'ifX!). — This is the first issue of a I'eference 

 book consisting for the most part of numerical data. There are in all 93 tables 

 which give the atomic weights, physical constants of the elements, calculation 

 of volumetric and gas analyses, specific-gravity tables, equivalents of weights 

 and measurers, etc. In addition there are classified lists of the more important 

 articles and books which have been published since January 1, 1905. 



METEOROLOGY— WATER. 



The meteorological elements and their observations in their relation to 

 weather and climate, (). ^Ieissner {Die nivtcorologischen Elemente und Hire 

 licolKicIitiiiHieii, iiiit Aui'ihlk-ken uuf Witterungskunde und Klimalehre. Leipsic 

 and Berlin: B. G. Teuhner, 1906, pp. VI-\-9Ji. figx. 33; rev. in Nature \ London'], 

 7.> {1907), No. 19.'i6. p. 366). — This is a text-book intended for higher schools 

 and for self-instruction. 



The question of the reorganization of the public weather service, Groh- 

 MANN {Mitt. Dent. Landir. GeseU.. 22 {1907). No. 6. pp. -'/.3-i)). — The weather 

 predictions of the German weather service of particular agricultural interest 

 are explained and their utilization briefly discussed. 



Monthly Weather Review {Mo. Weather Rev., 34 {1906), Nos. 11, pp. 505- 

 555, fifis, 15, ell mix 1 ) : 12, pp. 5-')7-607. ficjK. 16, chartfi 8). — In addition to the 

 usual rei)orts on forecasts, warnings, weather and croj) conditions, meteorolog- 

 ical tables and charts for the months of November and December, 1906, progress 

 of climatology throughout the world, recent papers bearing on meteorology, 

 recent additions to the Weather Bureau librai'.v, etc., these numbei's contain the 

 following articles and notes : 



Xo. 11. — Records of the Difference of Temi)erature Between Moiint Royal and 

 .Mc(;ill College Observatory, and a Method of Local Temperature Forecasting 

 (illus. I, l)y C. II. ;McLeod ; Studies on the Thermodynamics of the Atmosphere — 

 IX, The Meteorological Conditions Associateil with the Cottage City Water- 



