II CONTENTS. 



Page. 

 Comparison of volumetric methods of tannin analysis with hide- powder method, 



H. R. Procter and A. B. Searle 823 



Studies of the pentosans, A. Schone and B. Tollens 823 



The constituents of the tea leaf, etc., A. W. Nanninga 823 



Oven for igniting the precipitate of ammonium-magnesium phosphate, Schaller. 824 



The C. Fresenius-Offenbach distilling apparatus for determination of ammonia. 824 



The foundation principles of chemistry. I, Inorganic chemistry, (t. Altmann. 824 



Agricultural chemical exercises for agricultural schools, A. Mahrenholtz 824 



BOTANY. 



The effect of water on the maturing of woody stems, F. Kovessi 824 



Osmotic pressure and its role in defending cells against cold, d' Arsonval 824 



The periodicity of root growth, J. Hiimmerle 825 



The structure of the sprouts from various trees, M. Dubard 825 



The form and manner of root growth of some trees, M. Biisgen 825 



Concerning the proteid formation by plants, W. Zaleski 825 



The probable function of calcium oxalate crystals in plants, A. Schneider 826 



The sensitiveness of higher plants to the action of salts of potash, H. Coupin. . 826 



The etherizing of plants, E. Charabot and A. Hebert 826 



Notes for a monograph of the phenomena of plant transpiration, A. Burger- 

 stein 826 



Concerning symbiosis between plants and animals, F. Fedde 827 



The cell nuclei of Saccharomyces, C. Hoffmeister 827 



Investigations on the fall of the leaves of dicotyledons, A. Tison 827 



An edible fungus, J. C. Arthur 827 



Plants used by the Indians of Mendocino County, California, V. K. Chesnut . 827 



Elements of vegetable biology, J. Pavillard 827 



Nitrogen assimilation by living bacterial cells, J. Stoklasa and E. Vitek 827 



METEOROLOGY. 



Monthly Weather Review, Vol. XXIX, Nos. 10-12 ^ 827 



Meteorological chart of the Great Lakes, A. J. Henry and N. B. Conger 828 



Meteorological observations at the Michigan Agricultural College for 1900 828 



Meteorology in Prussia 828 



Results of meteorological observations in German Southwest Africa 828 



Report of t he Meteorological Council 828 



Climate of t he British Empire, 1900, A . Buchan 828 



Climate and mineral waters of Spain, A. Labat 828 



The daily liarometric wave, H. H. Clayton 828 



The story of the snow crystals, W. A. Bentley 828 



Hailstorm clouds, C. Kassner 829 



"Weather shoooting" at Windisch-Feistritz in southern Steiermark, F. 



Klengel 829 



Hailstorm cannon, L. Dumas 829 



The moon and rainfall, A. B. MacDowall and H. R. INIill 829 



The dry moon and the wet moon, A. K. Bartlett 829 



Weather and the horns of the moon 829 



Influence of the moon on the barometric state of the air, N. Demtchinsky 829 



The influence of rainfall on commerce and politics, H. H. Clayton 829 



Some economic aspects of the heat and drought of July, 1901, R. DeC. Ward. 829 



Organization of the weather service of Mexico, E. E. Schulz 829 



WATER — SOILS. 



The retention of bacteria in ice, H. W. Clark 829 



Ice supplies 829 



A soil study. Ill, The soil, W. P. Headden 830 



Soil survey around Imperial, Cal., T. H. Means and J. G. Holmes 831 



Alkali lakes and deposits, W. C. Knight and E. E. Slosson 832 



The rise of alkali salts to the soil surface, E. W. Hilgard 833 



The chemical exploration of Belgian soils, A. Petermann 833 



Investigations on the physical properties of soils, A. Mitscherlich 8.33 



Coniparison of results by different methods of soil analysis, H. Buchner 833 



Silting flask and sieves for mechanical analysis of soils, etc., A. Gawalowski. . 833 



The temperature of the soil and the surface of the ground, J). A. Seeley 833 



