. Actualités agricoles. Agriculture -- Antilles ; maladies des plantes -- Antilles. Tome XV. No 381 ; L'actualité agricole. 397. Dans SULPHITATION LA FABRICATION DE SUCRE BLANC. Par Francis Maxwell, Londres : Norman Eodger, 1916. Pp.72. Fig. 8 plaques  + in. Price7s.6RZ.net. La pénurie de sucre blanc depuis la guerre n'a pas été imputable au manque réel dans les sucres de l'absence d'installations de raffinage. Cette circonstance se prête plus d'importance à la fabrication de sucre blanc de plantation. Jusqu'à aujourd'hui, Java, l'Ile Maurice, et de la Louisiane sont les seuls endroits où le secteur de la canne à l'usine a été

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. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Vol. XV. No. 381; THE AGRICULTURAL NEWS. 397. SULPHITATION IN WHITE SUGAR MANU- FACTURE. By Francis Maxwell, London: Norman Eodger, 1916. Pp.72. Figs. 8 + Plates in. Price7s.6rZ.net. The shortage in white sugar since the war has not been due so much to actual shortage in raw sugars as to lack of refining facilities. This circumstance lends additional impor- tance to the manufacture of plantation white sugar. Up to the present, Java, Mauritius, and Louisiana are the only places where the sugar-cane factory has been equipped for turning out this grade of sugar ; it is likely, however, that the production of white sugars on the plantation will extend to other places in the future. The present volume constitutes a useful source of infor- mation regarding the simplest form of refining process— Sulphitation. The information given is of a simple character, clearly and conveniently arranged, and should prove extremely helpful to the factory worker. The principal points dealt with are the preparation and properties of sulphurous acid; generating plants and their control; action of the acids on juices; application of sulphitation to juice; and sulphitation of the syrup and molasses. A special chapter is written on the sulphitation process in practice, and a description is given of the process as adopted by the leading white sugar countries. An original feature of the book is the summary, which is in the form of questions and answers. The questions are such as would be asked by the practical worker in his training in sulphitation, and the answers are obviously the replies of an expert thoroughly familiar with the various operations involved. FIXATION OF ATMOSPHERIC NITROGEN. By Joseph Knox: Gurney and .facksons. Chemical Mono- graphs. London, 1914, Price i.s net. This book gives an account of the more important processes for the fixation of atmospheric nitrogen, and more especially of the theory

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