EXPERIMENT STATION RECORD. 



Vol. XXIX. Abstract Number. No. 9. 



RECENT WORK IN AGRICULTURAL SCIENCE. 



AGRICULTURAL CHEMISTRY—AGROTECHNY. 



Dictionary of applied chemistry, V. Vkxavecchia et al. (Disionario di 

 Merceologia e di Chimica AppUcata. Milan, 1911-191S, 3. ed., rev. and enl., vols. 

 1, pp. XIV+'155S; 2, pp. 1860). — This dictionary, which is in the Italian lan- 

 guage, deals with terms and definitions of foods, chemicals, and pharmaceutical 

 products. The ISnglish, German, and French equivalents are given for each sub- 

 stance or product discussed. 



Text-book of micro- chemistry, F. Emich (Lehrhuch der Milcrochemie. Wies- 

 haden, 1911, pp. XIII +212, figs. 30). — This book is divided into a general part 

 which deals with general methods used in micro-chemistry, and a special part 

 which deals with the inorganic cations and anions, and organic compounds 

 (alkaloids, glucosids, and proteins). 



Gmelin-Kraut's handbook of inorganic chemistry, edited by C. Feiedheim 

 and F. Peters (Gmelin-Kraut's Handbuch der anorganischen Chemie. Heidel- 

 lerg, 7, ed., rev. and enl., vol. 1, pts. 1, 1907, pp. XXXIV+888, figs. 10; 2, 1909, 

 pp. XXX+Ui; 3, 1911, pp. XXXIX+907; vol. 2, pts. 1, 1906, pp. XXVII+512, 

 figs. 46; 2, 1909, pp. XXXVI+726, figs. 7; vol. 3, pts. 1, 1912, pp. XCI+1568; 2, 

 1908, pp. LIV+11S5, fig. 1; vol. 4, pt. 1, 1911, pp. 1/ JX +i 056). —This is the 

 seventh edition of this well-known handbook, which has been entirely revised 

 and enlarged. 



The methods of organic chemistry, edited by T. Weyx (Die Methoden der 

 Organischen Chemie. Leipsic, 1909-1911, vols. 1, pp. XIX+S60, figs. 257; 2, pts. 

 1, pp. XXI +703, figs. U; 2, pp. XXI+705-U62, figs. S3).— This large handbook, 

 which is meant for the laboratory, deals with the methods used in pure organic 

 chemical work. Among the chapters in the 2 volumes are organic elementary 

 analysis (qualitative and quantitative) ; simplified methods of elementary anal- 

 ysis; methods for determiaing molecular weights; crystallization; extraction; 

 preparation of gases; sublimation; polarization; electrical conductivity meth- 

 ods; oxidation and reduction; the decomposition of optically active substances 

 Into their active components; polymerization and depolymerization ; catalysis; 

 preparation and the use of the more important enzyms ; condensation ; the alde- 

 hyde and ketone groups; ozonids; carboxyl groups; nitroso groups; diazo and 

 azo groups; amino acids; polypeptids; metal-organic compounds; amino and 

 imino groups; calorimetry of organic compounds; and drying of organic fluids. 



The ether extract and the chloroform, extract of soils, G. S. Fbaps and J. B. 

 Rathee {Texas Sta. Bui. 155, pp. 3-6). — In this work 28 soils were examined 



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