II CONTENTS. 



Page. 



Ginger and extract of ginger, Reich 12 



The examination of marzipan and marzipan goods, Hiirtel and Hase 12 



A simple meclianiral inc'tliod for the estiination of canein in cows' milk. Hart. 12 



Application of reductase test in judging milk, Barthel 12 



A very simple means of distinguishing lietween cooked and raw milk, ( iaucher. 13 



Pentoses in feces and their estimation, Jolles 13 



Miscellaneous chemical analyses, Woll and Olson 13 



New apparatus for determining condensing power of soils for ammonia. Rosing. 13 

 Determination of heat of comhustion of organic compounds hy use of platinum 



resistance tliermometer, Fischer and Wrede 13 



METEOROLOGY — WATER. 



Note on some meteorological uses of the polariscope. Bell 13 



Equivalent temperatures as a unit expression, Knoche and Hann 13 



The relation of meteorology to horticulture, Curtis 14 



The development of the German weather service during 1907, Bornstein 14 



The weather of tlie summer of 1907 in Germany and its influence on the Ger- 

 man agricultural industry, Kassner and Hillmann 14 



Climate [of Belgium] 14 



Contril)utions to the study of the meteorology of Cape Verde, de Macedo 14 



Studies on the climate of Tunis, Ginestous 14 



The climate of Sao Paulo, Brazil, de Souza Reis 14 



Lakes and forests as climatic factors, Schubert 14 



A new theory of formation of underground water, Martinet 14 



Iron in subterranean waters, Schwers 14 



Water supply investigations in Alaska, 1906-7, Henshaw and Covert 14 



Nitrates, nitrites, and ammonia in sea water. Ringer and Klingen 15 



The fertilizing value of snow, Shutt 15 



On the purification of peaty waters by freezing, Shutt 15 



On natural filtration of soils, Prausnitz _ 15 



SOILS — FERTILIZERS. 



Preliminary report on the agricultural geology of Nebraska, Condra and Keyser. 15 



Drainage conditions in Wisconsin, Whitson and Jones 15 



The required capacity of open drainage ditches, Jones 15 



Some field studies in tile drainage, Jones and Scbroeder 15 



Studies on some soils from Saskatchewan, Clark, Gortner, and Vail 16 



Soil surveys and agricultural maps in foreign countries, Rordam 16 



Twenty-five years' work of the German Moor Culture Association, Wangen- 



heim and Fleischer 16 



The Swedish Moor Culture Association and the Flahult moors, Grandeau 16 



First principles of soil fertility, Vivian 16 



The productiveness of the soil: Chemical factors, Graftiau 16 



The influence of various salt solutions on the permeability of soils, Hissink . . 16 



Nitrogen content of soils as affected by methods of farming, Whitson et al 16 



The feeding of plants by the nitrogen-fixing bacteria of the soil, Koch et al. . 17 



On fixation of nitrogen in cultivated soils, Warmbold 17 



Fixation of nitrogen bj' certain hyphomycetes living in dead plants, Froehlich . 1 7 



Adaptability of sources of energy to assimilation of nitrogen, Pringsheim 18 



The fixation of nitrogen by Rhizohium leguminosarvm, Greig-Smith 18 



The fixation of nitrogen by Azotobacter chroococrmn, Greig-Smith 18 



Biological method for determination of alkali carbonates in soils, Christensen. . 19 



The new nitragin, Vogel 19 



Inoculation as a factor in growing alfalfa, Harding and Wilson ' 19 



Alfalfa aided by soil inoculation. Hall 19 



How to determine the fertilizer requirements of Ohio soils, Thorne 20 



Report on cooperative field experiments in Jutland, 1906 20 



Cooperative fertilizer trials in Malmuhus County, 1906, Weibull et al 20 



The value of the Albert plant food salts for pet cultures, Brehmer 21 



Further experiments with various kinds of nitrate, Sebelien 21 



Lime nitrogen applied at seeding and used as top-dressing in spring, Stutzer. . 21 



Citric-acid-soluble phosphoric acid in phosphatic slags, de Molinari and Ligot. 21 



Comparative tests of Thomas slag and agricultural phosphate, Kuhnert 21 



On the fertilizing value of salts of manganese, Grandeau 22 



The American fertilizer handbook 22 



