CONTENTS, III 



Page. 



The fertilizing influence of sunlight, Russell 123 



The fertilizing influence of sunlight, Aitken 123 



The action of carbon bisulphid on soils and its use in vineyards, Muth 123 



Progress of green manuring for wet lands, Sampson 124 



Investigations on farmyard manure, Russell 124 



On the conditions of nitrification in stable manure, Niklewski 124 



Preservation of manure with a view to suspending and producing heating, Gimel . 125 



Supplementing manure with fertilizers, Vivien and Robert 125 



Summary of results of Poltava Experiment Field, 1886-1906. — II, Mankovski. . 125 



The composition of commercial fertilizers, Whitney 125 



Commercial fertilizers and fertilizer inspection, Whitney 126 



New fertilizing materials, Vallier 126 



Pot experiments with new nitrogenous fertilizers, Soderbaum 126 



The new nitrogenous fertilizers — calcium cyanamid and nitrate of lime. Hall. . . 127 



Ammonium sulphate as a fertilizer, Soderbaum 127 



The modern nitrogen industry 127 



The nitrogen of the air. — Waterfalls and agriculture, Grandeau 127 



Extraction of nitrogen from distillery vinasse, Vuaflart 128 



Fertilizer experiments with insoluble phosphates, Sebelien 128 



The phosphate deposits of the United States, Van Horn 128 



Comparative value of ground limestone and burnt lime, Fletcher 128 



The influence of lime and magnesia on plants, II, Bemardini and Siniscalchi. . 128 



^langanese in agriculture, Bartmann 128 



The action of zinc in pot experiments, Ehrenberg . . . , 129 



Annual report on fertilizers, Ross 129 



Analyses of fertilizers sold in Maryland, McDonnell et al 129 



Commercial fertilizers, Hite and Kunst 129 



Report of the agricultural chemist for the year 1908-9, Mann 129 



AGRICULTURAL BOTANY. 



Department of botanical research, MacDougal 130 



Some evaporation experiments in relation to excessive transpiration, Wiegand . . 130 



Effect of longitudinal compression on mechanical tissue, Pennington 130 



The response of the guayule, Parthenium argentatum, to irrigation, Lloyd 130 



Hail injury on forest trees, Phillips 130 



The post-mortem blackening of leaves, Maquenne and Demoussy 131 



The intensity of alpine light, Clements and Butters 131 



Action of ultraviolet rays on microbes, Cernovodeanu and Henri 131 



Action of ultraviolet rays on microbes, Cernovodeanu and Henri 131 



On the presence of enzyms in soil, water, and dust, Fermi 131 



Tests with cultures of root tubercle bacteria, Ewart 131 



Nitrobacterine, nitragin, and soil cultures on blue lupine, von Feilitzen 132 



Mutual interaction of plant roots, Dandeno 132 



The fungus symbiosis of orchids, Burgeff 133 



The evolution of new forms in Viola through hybridism, Brainerd 133 



A new form of Nigella damascena obtained through mutilation, Blaringhem 133 



Seeds and plants imported from July 1 to September 30, 1909. — Inventory No. 20. 133 



FIELD CROPS. 



On methods in field experiments, Egorov 133 



[Field crop yields and methods of production], McGuire 134 



[Experiments with field crops at Coimbatore], Shepperson ' 134 



The mechanical cultivation of chernozem soils, Miservich 135 



Report of Bogoroditsk Experiment P'ield (Government Kursk) for 1907, Pulman. 135 



Report of Omsk Experiment Field for 1905-6, Sladkov 135 



Report of Omsk Experiment P'ield for 1907, Sladkov 135 



[Results with cereals at the Experiment Field of Ploti for 1908], Karademov 135 



( 'ultivation of cereals on the Kherson Experiment Field 136 



Influence of manure and of method and rate of sowing on yield of cereals 136 



The influence of different methods of cultivation on yield, Kolesnikov 136 



Cultivation of root crops, Mirusyev 136 



A protected stock range in Arizona, Griffiths 136 



Alfalfa in western Oregon, Scudder 137 



Barley, McWethy 137 



Crimson clover: Its rate of gaining nitrogen, Penny and Macdonald 137 



