II CONTENTS. fVol. 43 



SOILS FERTILIZERS. 



Page. 



Productive soils, Weir 719 



Agricultural geology, Emerson 719 



Soil survey of Kent County, Del., Dunn, Snyder, and Hoftecker 719 



Soil survey of St. Johns County, Fla., Taylor et al 719 



Soil survey of La Salle Parish, La., Lounsbury and Rogers 720 



Soil survey of Madison County, Miss., Thiirp, Smies, and Musgrave 720 



Soil survey (tf Webster County, W. Va., Mooney ^ 720 



Agricultural characteristics of the soils of Peru, de Lavalle 720 



Analyses of soils of Eritrea, Cauda .721 



Sandy soils, Spafford 721 



Soils 721 



Fertilization, soil compression, and germination, Kosterz — ^ 722 



Soil moisture studies, Sievers 722 



Capillary movement of soil moisture, McLaughlin 722 



The present status of alkali, Kelley T24 



Alkali studies, Vinson and Catlin 724 



Resistance of crops to alkali, Vinson and Catlin 724 



Nitrification in Texas soils, Fraps . 724 



Supply of nitrogen in the soil, Ames 72r> 



The hysteresis of aqueous solutions of humus soils, Puchner 725 



Crop residue work in jars, Sievers ; 726 



The effect of straw on the soil, Murray 726 



The maintenance of .'<oil fertility in H.-imilton County, Ohio, Thorne 72(j 



Investigational work with fertilizers, Shutt 726 



Fertilizers, Langelier 727 



Fertilizer formulas for Georgia soils. Harper 727 



The preparation of mixed fertilizers for agriculture, Lopez Dominguez 727 



Chemical fertilizers in Italian agriculture, Borghesani 728 



The nutrient content of water supply and its utilization, Fischer 728 



The fertilizing value of rain and snow, Shutt 728 



The nitrate industry of Chile 728 



Potash, an American war industi-y. Palmer 728 



Potash deposits in Spain, Gale 728 



Ijimestone and fertilizer experiments, Blair 729 



Does burnt lime destroy organic matter? Fippin 729 



Agricultural lime, Miller and Krusekopf 729 



Fertilizer control in 1918, Swanson, Latshaw, and Anderegg 729 



AGRICULTURAL BOTANY. 



Genera and supergenera, Hitchcock 729 



Species formation from the phylogenetic and group standpoint, de Vries 729 



Heredity in Qilnothera, Renner 729 



Floral variations in the ox-eye daisy, Blaringhem 729 



On the periodicity of Hyacintlius orientaUs, Blaauw 729 



Variegation in tree foliage, Kiister 729 



Nitrogen metabolism and yellowing in leaves of Tropccoliiin majus, ]\Ieyer_ 729 



Orientation movements of buds, blooms, and fruits, Miibius 730 



The distribution of dissolved oxalates in plants, Molisch 730 



The absorption of minerals by root tips, Coupin 730 



LTtilization of glucose and levulose by Sterigmatocystis nigra, Molliard 730 



The fermentation by some yeasts of nectar fi"om winter plants, Schoellhorn. 730 



Ultraviolet rays and sugar cane, pineapple, and banana industries, Tsuji__ 730 



Light and heat radiation as ecological factors, Drade 731 



Some aspects of the plant ecology of certain Kansas sand hills, Emerson__ 731 



The Chloridefe of Argentina, Parodi 731 



Two Russian Gymnosporangiums, Eriksson 731 



The Uredinales of Indiana, [I], II, Jackson 731 



Anatomical study of fungus symbiosis in Casuarina equisetifolia, Mlehe 731 



Some abnormalities in plant structure, Markle 732 



Banding and forking in roots. Schenck 732 



Anatomical modifications of roots hf mechanical action, Bloch ' 732 



Wound cork formation in potato and decay, Shapovalov and Edson 732 



Root cork in plants of highly heated soils, Diels 732 



The penetrability of foliage leaves for gases, Neger 732 



