CONTENTS. Ill 



Page. 



The nitrogen question and its solution, Caro 1021 



Sulphate of ammonia in 1908, Maizieres 1021 



The eynthi'sLs of ammonia by means of peat, Woltereck 1021 



The oxidation of the nitrogen of the air,. Schonherr 1021 



A future substitute for nitrate of soda, Birkeland and Frank 1021 



Calcium cyanamid 1021 



New Canadian industry, Webster 1021 



Potash silicate, Krische 1021 



Potash silicate (ground phonolith) as a potash fertilizer, Wagner 1022 



Soil fertility and phosphoric acid, P>aps 1022 



Shall we use natural rock or acid phosphate for Illinois soils? Hopkins 1022 



Phosphoric acid of varying solubility as a fertilizer for meadows, S^■oboda J022 



Modern land-pebble phosphate-mining plants in Florida, Mendenhall 1022 



Phosphate industry in Tennessee, Ruhm 1022 



Agricultural lime, Jenkins and East 1022 



Lime, Rowe 1022 



Gypsum deposits, Rowe 1023 



Lime and marl examinations in Jutland, 1908, Kristensen 1023 



Magnesia, its function and use in agriculture, Rigaux 1023 



Manurial value of sewage and sewage sludge 1023 



Analyses of ashes discharged during eruption of ^'esuvius in 1906, Girasoli 1023 



Consumption of fertilizers 1023 



Fertilizers in South Australia, Summers 1023 



AGRICULTURAL BOTANY. 



A statistical criterion for species and genera among the bacteria, Winslow 1024 



Studies on bacterial enzyms, Zikes 1024 



The proteases of plants, Vl, Vines 1024 



Concerning fungus desamidase, Pringsheim 1024 



Concerning hydrating ferments in various gums, Boucher 1025 



Preliminary investigations on the oxidizing diastases of plant latex, Cayla 1025 



The influence of agitation on the growth of some of the lower fungi, Sar'torv . . . 1025 



The influence of light on the growth of lihizopus nigricans, Raybaud .' 1025 



The effect of light on germination, Kinzel 1026 



The chemistry of chlorophyll, Schry ver 1026 



Studies in chlorophylls, Marchlewski ]026 



The photodynamic work of chlorophyll extracts, Ilausmann 1026 



Protein changes taking place in green plants kept in the dark, iUitkewitsch. . 1026 



Chemical changes due to the wounding of plants, Friedrich 1027 



The action of sulphur dioxid on plants, Wieler 1027 



A new group of plants containing hydrocyanic acid, Greshoff 1027 



Cenlaurea aupcra, a plant containing hydrocyanic acid, Gerber and Cotte 1027 



Seeds and plants imported fiom April 1 to June 30, 1908 1027 



FIELD CROPS. 



Dry farming investigations in Montana, Atkinson and Nelson 1028 



Alfalfa for seed produc-tion in semiarid regions, Brand and Westgate. 1028 



Alfalfa yields, 1908, Stevens 1029 



Comparative variety tests with fodder beets, Vafiha and Kyas 1029 



Tests with fodder beets and of Mauthner treatment of beet seed, Kyas et al. . . 1029 



The sugar-beet crop in the principal European countries from J 898- 1908, Bureau. 1029 



The American sugar-beet growers* annual, edited by Rodents 1029 



Score cards for dent corn 1030 



Fertilizer tests with cotton, Stevens 1030 



Recent experiments with oats, Williams 1030 



Varieties of jjotatoes grown in the ( 'entral Provinces, Evans 1031 



Culture and j)rf])aration of si.sal, Marques 1031 



The soy bean: A comparison with the cowpea, Mooers 1031 



Food consunq)ti()n of beet and relation to sugar content, Andrlik and Irhan.. 1032 



Experiments with varieties of sugar cane, Watta et al 1032 



Manurial experiments, Watts et al 1032 



Shelter-tent experiment with Sumatra-type tobacco, Frear 1032 



Principles and practical methods of curing tobacco, Garner 1033 



