328 EXPERIMENT STATION RECORD. 



factory ; reviews of the fertilizer materials markets in the United States and 

 statistics of the consumption of fertilizers in the United States as a whole and 

 in the different States ; statistics of farm expenditures for fertilizers ; the home 

 mixing of fertilizers; a list of the state fertilizer controls; and numerous useful 

 tables giving conversion factors, temperature corrections for hydrometer read- 

 ings of sulphuric acid, fertilizer formulas, etc. 



The world's consumption of fertilizers {Rev. Sci. [Paris], 50 {1912), 1, 

 No. 1, pp. 22, 23). — This is a brief note on statistics published by Schneider 

 elsewhere. 



The figures are for 1908 and indicate the production in that year of 10,000,000 

 metric tons of phosphatic fertilizers, the greatest consumers of which were, in 

 the order nanietl, Belgium, Gei'many, Italy, and France; potash fertilizers corre- 

 sponding to 500,000 tons of pure potash, the order of consumption of which by 

 countries was Germany, Belgium, United States, France, jyid Austria ; and 

 nitrogenous fertilizers, including both sodium nitrate and ammonium sulphate, 

 2,500,000 tons, the order of consumption by countries being Belgium, Germany, 

 England, France, and Italy. 



Mineral fertilizers in Spain {Engrais, 27 {1912), No. 2, pp. U-J^S). — It is 

 shown that the use of mineral fertilizers is increasing in Spain, especially in 

 Catalonia, and in 1909 amounted to 292,436,874 kg. (321,680 tons) valued at 

 47,818,017 pesetas ($9,228,877.28). The larger proportion of the fertilizers used 

 is imported from England, France, Belgium, and Germany. A few fertilizer 

 factories have been established, of which three in Barcelona are of some im- 

 portance. 



Artificial fertilizer trade {Daily Cons, and Trade Rpts. [U. 8.1, 15 {1912), 

 No. 100, pp. 369-373). — This is a brief review of the fertilizer trade in Russia, 

 Denmark, Italy. China, Canada, and the West Indies. 



AGRICULTURAL BOTANY. 



A text-book of botany. — II, Ecolog'y, J. M. Covlter, C. R. Barnes, and H. C. 

 CowLES {Neiv York, Cincinnati, and Chicago, 1911, vol. 2, pp. X+Jt85-96^-{-a^q, 

 figs. 535). — This is the second and concluding volume of the text-book of botany 

 from the Hull Botanical Laboratory of Chicago University (E. S. R., 24, p. 

 626). The plan outlined in the first volume has been maintained, the work being 

 largely developed from courses in undergraduate study, though in the present 

 volume the authors have included many recent observations and some new 

 points of view. 



This new text-book should prove especially adapted to the training of under- 

 graduate students, as it contains the essentials for a foundation for work in 

 almost any field of botany. The authors state that " it is not intended for 

 reading and recitation," but it will doubtless prove suggestive to teachers and 

 will aid students in correlating their observations with each other and with 

 the known facts. 



Types of British vegetation, edited by A. G. Tansley {Cambridge, 1911, pp. 

 XX+4IG, pl^. 36, figs. 22). — This book is the result of the work of the com- 

 mittee founded in 1904 to carry on a survey and study of British vegetation. 

 An effort is made to recognize and describe the different types of plant com- 

 munity existing in the natural vegetation of the British islands, and to trace 

 their relations to climate and soil and to one another. It is believed that the 

 f-tatenieats made about the relation of soils to the different types of vegetation, 

 which are partly based on anatysls and partly inferred, are essentially accurate 

 and afford a sound basis of classification. 



