CONTENTS. ni 



Page. 



Potasli shipments during 1914, Skinner .- 31 



Occurrence and composition of some Alabama phosphates, Ross 31 



On the action of lime and magnesia in the nutrition of plants, Haselhoff 31 



Catalytic fertilizers, magnesium salts, etc., Munerati 31 



Catalytic fertilizers, Boullanger 31 



Radio-active fertilizers, Malpeaux 31 



Recent experiments on the fertilizing action of sulphur, Boullanger 31 



Fertilizer inspection 31 



Inspection and analyses of commercial fertilizers, 1913, Trowbridge 31 



Tabulated analyses of commercial fertilizers 31 



AGRICULTURAL BOTANY. 



Plant life, Farmer 32 



A recording transpirometer, Blackman and Paine 32 



Relation between structure and physiological characters, fakushkin and VaAdlov 32 



Anatomical coefficients and physiological characters of plants, Kolkunov 32 



A contribution to the physiology of the purple sulphur bacteria, Skene -32 



Some toxic and. antitoxic effects in cultures of SpirogjTa, Hoyt 32 



Gaseous exchanges of plants with the atmosphere, Maquenne and Dernoussy. . 33 



Respiration of plants under various electrical conditions. Knight and Priestley . . 33 



Studies on freezing and frost killing in plants, Maximow 34 



A study of the effect of smoke and dust on plants, Sabachnikoff 34 



The occurrence of rennet in Rhizopus nigricans, Durandard 34 



Presence in leaves and flowers of yellow pigments, Combes 34 



Differential mortality with respect to seed weight in Pisum sativum, Harris 35 



Studies in seedless fruits, Negri 35 



Origin of species in polymorphic genera, De Vries 35 



The vegetation in the vicinity of Leyni in relation to agriculture, Ferrari 35 



The flower-finder, Walton 35 



FIELD CROPS. 



Forage crops: Annual grasses and roots, Williams and Welton 35 



Plants introduced into a desert valley as a result of irrigation, Parish 36 



Irrigation experiments, True et al 36 



Experiments with lime nitrogen, sulphate of ammonia, and nitrate of soda 36 



Comparative fertilizer experiments with cereals in 1912, Wehnert 37 



Soy beans and cowpeas, Wiancko, Fisher, and Cromer 37 



Chemical analyses, Bigler 37 



Grass mixtures for North Carolina pastures, Williams 37 



The creeping rootstock of Agropyron repens, Knight 37 



Alfalfa in Kansas, Jardine and Call 37 



The management of blue-grass pastures. Carrier and Oakley 37 



The premier clover for North Carolina farmers, Williams 38 



Crimson clover: Utilization, Westgate 38 



The growth of maize on cogan soil, Navarro 38 



Applying fertilizers to corn and cotton by different methods, Williams 38 



Effects of fertilizing materials upon the maturity of cotton, Williams 39 



Fertilizer experiments with cotton in northern Alabama in 1913, Duggar et al. . 40 



Method of improving cotton by seed selection, Winters 41 



Buying cotton seed for planting. Winters 41 



Long staple cotton in North Carolina, Williams 41 



Growing Egyptian cotton in the Salt River Valley, Arizona, Hudson 41 



Cotton in the Dominican Republic 41 



Composition of hops grown in different parts of world, Tartar and Pilkington. . . 41 



Species and varieties of malangas cultivated in Cuba, Roig y Mesa et al 41 



The influence of subsoiling on yield, Augstin 41 



Notes on the culture of peanuts, Leplae 41 



Fertilizer experiments with potatoes, Clausen 41 



Experimental study on varieties of potatoes, 1910-11 and 1911-12, Tonnelier. . 42 



Notes on potato growing 42 



[Experiments with rape], Bieler 42 



Production of rape seed near Shanghai, Wilder 42 



The cultivation of rice in Uruguay, Kessissoglou 42 



Composition of sugar beets grown in the northern counties, Collins and Hall 42 



