n CONTENTS. 



METKOROLOGY — WATEU. 



Pago. 



Frost data of the United States, and length of the crop-growing season, Day. . . 315 



Meteorological record 31G 



Division of Meteorology, Ilelme 316 



Bulletin of the Mount Weather Observatory 316 



Meteorology, practical and applied, Moore 316 



The South 'a rainfall and temperature. Withers 316 



The climate of Hungary, Rona 316 



Underground-water papers, 1910 316 



The quantities of chlorin and sulphur carried into the soil, Vityn 317 



Home waterworks — a manual of water supply in country homes, Lynde 317 



Farm water supplies, Kellerman and Whittaker , 317 



SOILS — FERTILIZERS. 



Organic phosphoric acid of the soil, Fraps 318 



Character and leaching of podzol soils, Tumin 319 



On the relation of clay soils to water, Atterberg 319 



The soil — a living thing, Harshberger 319 



Enzymatic activities in soils, Schreiner and Sullivan 320 



Two compounds isolated from peat soils, Robinson , 320 



The isolation of creatinin from soils, Shorey. 320 



Productivity of soils. King 320 



Examination of soil samples 320 



The Portsmouth sandy loam, Bonsteel 320 



The Sassafras silt loam, Bonsteel 320 



[Soils of the Hawaiian Islands], W^ilcox 320 



Deli soils, Vriens and Tijmstra 321 



Deli soils, Vriens 321 



Methods and results of ten years' soil investigations in Illinois, Hopkins 321 



Results of scientific soil treatment, Mann . . . 321 



The natural plant food content and fertilizer requirements of soils, Ledien 321 



Debated fertilizer questions, Schneidewind 322 



The purchase and home mixing of fertilizers, Taylor 322 



On the value of peat litter, Tylvad 322 



A new ammonia salt 322 



Nitrate industry of Chile, Fletcher 322 



The importance of phonolite as a potash fertilizer, Pfeiffer et al 322 



Various experiments with raw phosphates, Prianishnikov et al 322 



Experiments with bone meal, Prianishnikov et al 322 



On the sale of Martin slag containing fluorin for Thomas slag, Lemmermann. . . 323 



A few notes on lime for agricultural purposes, Curry 323 



The valuation of lime marl, Gerlach 323 



Fertilizer inspection 323 



Analyses of fertilizers, spring season, 1911, Kilgore et al 323 



Analyses of licensed commercial fertilizers, 1911, WoU 323 



List of fertilizer manufacturers and importers 323 



AGRICULTURAL BOTANY. 



Protective enzyms. Cook et al 323 



Some properties characteristic of amylose and amylopectin, Gruzewska 324 



On the formation of anthocyanin, WTieldale 324 



The absorption of colloidal organic material, ]\Iaze 324 



The action of some hydrolyzable salts and colloids on plants, Gregoire 324 



Influence of zinc and manganese on Aspergillus niger, Bertrand and Javillier. . . 325 



The retention of mineral matter by annual plants, Andre 325 



The selective power of plants for dextrose and le vulose, Lindet 326 



The action of ultraviolet rays on starch, Massol 326 



Alleged utilization of atmospheric nitrogen by special hairs of plants, Kovessi. . 326 



On the ' ' air culture " of green plants, Artsikhovskii 326 



The nuclear conditions in certain short-cycled rusts, Olive 326 



The theory and practice of plant breeding, Lang 327 



Alterations in heredity induced by ovarial treatment, MacDougal 327 



Experimental studies in Indian cottons, Leake 327 



Studies on variability and heritability of pigmentation in (Enothera, Gates 327 



Experiments with Primula sinensis, Gregory 328 



A census catalogue of Irish fungi, Adams and Pethybridge 328 



