II CONTENTS. 



Page. 



Analyses of irrlgatiou waters, Knisely 11 



Water for various crops, Day 11 



Underground waters of coastal plain of Texas, Taylor 12 



Water resources of the western portion of the Panhandle, Gould 12 



The Potomac River basin, Parker et al 12 



The real cause of the drying up of springs in the Somme. Houillier 12 



The sinking of subterranean waters and disappearance of springs, MarteL 12 



The pollution and self-purification of ice 12 



The prevention of stream pollution by strawboard waste, Phelps 13 



Report of commission on sewage irrigation of Paris, Bourneville et al 13 



Sewage and the bacterial purification of sewage, Rideal 13 



SOILS FERTILIZERS. 



Further studies of unproductive soils, Livingston et al 13 



Wire-basket method of soil investigation of Bureau of Soils, Thorne 14 



Suggestions regarding the examination of lands, Hilgard 14 



Illinois soils in relation to systems of permanent agriculture. Hopkins 15 



Soil surveys, Guthrie 15 



Agricultural charts and the analysis of soils, Gregoire 15 



The agricultural value of the soils of central and western Africa, Hebert. 15 



The fertility of some colonial soils, Juritz 15 



On the alkali soils of Middle Hungary, von Sigmond 16 



Notes on some Java soils. Detmer and Immendorff 16 



Soils of Cambridgeshire, Foreman__ 16 



Analyses of soils from old apple orchards. Knisely 16 



Soils of the Abitibi district, Plarcourt 16 



Soil analysis. Day 17 



Soil acidity in relation to available phosphates, Whitson and Stoddart 17 



Some mutual effects of tree roots and grasses on soils, Jensen 17 



Marly sul)soils and the chlorosis of citrus trees. Ililgard • 17 



Treatment of peat soils. Day 17 



Aeration of soils. Day 17 



Soil temperatures 17 



Seed inoculation. Finlayson 17 



Commercial cultures of Psriolomonas radicieohi, Harding and Prucha 18 



On changes iu a light sandy soil by sterilization, Koch and Liiken 18 



On new i)rincipk's in soil studies, Christensen 18 



Movements of certain liacteria in soils. Kellerman and Fawcett 18 



The electro-chemical industries in 100(!. Kershaw 18 



Utilization of atmospheric nitnigen for industrial purposes. Frankland 19 



Lime nitrogen, nitrate of soda, and sulphate of annnonia, Wein 19 



The movement of anunoniacal nitrogen in nature, Ehrenberg 19 



Niti'ogenous fertilizers, Mansholt 19 



Phosphates and phosphorus 19 



Changes which acid phosphates undergo under pressure. Spring 20 



Influence of lUiosphates on the circulation of potash in soils. Schreiber 20 



Algerian and Tunisian phosphates in 1900, Maizieres 20 



Researches on glauconite. Collet and Lee 20 



The use of potash salts on different soils and crops, Densch 20 



Commercial fertilizers. Jones and Ilaworth 1 20 



Analyses of commercial fertilizers 21 



Trade values and fertilizer and soil analyses, Goessmann and Haskins 21 



Inspection of fertilizers in lOuO. Morse 21 



[Analyses of garbage ashes], Ilarcourt 21 



Odorless fish fertilizer ^ 21 



Mineral resources of the United States, 1905. Day 21 



The fertilizers and feeding stuffs act of Great Britain 21 



The fertilizers and feeding stuffs regulations. 1906 21 



The fertilizers and feeding stuffs act, Voelcker 21 



AGRICULTURAL BOTANY. 



Contribution to knowledge of correlation in plant metabolism. Hansteen__ 21 



Influence of light on assimilation of organic material, Lubimenko___ 22 



The development of chloroiihyllous plants in the absence of carbon dioxid. 



but with nontoxic quantities of amids, Lefevre __, ,_,, 22 



