. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 222 THE AGRICULTURAL NEWS. July U, the SHADE TREES. The Tropical Agriculturist, i'or May, contains following article on the importance of shade trees TJ/E BOOK OF THE UOTlIAilSTED EXPERI- MENTS : By A. D. Hall, , Director of the Rothamsted Experimental Station. London : John Murrai/^ Albemarle Stn-et, W., 1905. In this work Mr. Hall summarizes a mass of information that has accumulateil during the time these experiments have been in progress, much of whicli has already been published in the long series o
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 222 THE AGRICULTURAL NEWS. July U, the SHADE TREES. The Tropical Agriculturist, i'or May, contains following article on the importance of shade trees TJ/E BOOK OF THE UOTlIAilSTED EXPERI- MENTS : By A. D. Hall, , Director of the Rothamsted Experimental Station. London : John Murrai/^ Albemarle Stn-et, W., 1905. In this work Mr. Hall summarizes a mass of information that has accumulateil during the time these experiments have been in progress, much of whicli has already been published in the long series of Rothninsted Memoirs. The purpose of the Rothamsted experhnents has been to ascertain how plants grow and obtain nutriment from the soil. No attempt has been made at Rothamsted to demonstrate the most profitable means of growing a particular crop, but rather to arrive at princiiiles of general application, which the farmer must adapt to his special conditions. Mr. Hall's book, therefore, forms a complete guide to the experiments. Wheat, barley, oats, root-crops, and leguminous crops have been grown at Rothamsted continuously on the same land for many years. The i)lants were manured, and from the results conclusions were drawn as to the food requirements of the various crops. Five chapters are devoted to these experiments and one to grass land mown for hay every year. As in the other experiments, it soon became evident what manures were needed. Other chapters deal with miscellaneous subjects of agricultural importance. The book is copiously illustrated by a number of full-page plates and many diagrams. THE ATLAS OF THE WORLDS COMMERCE : Edited by J. G. Bartholemew, J^ondon : George Neivnes., Ltd., Southampton Street, Strand, To be completed in twenty-two parts, issued fortnightl}-. Piice Qd. each part. The first part of this excellent publication, which is described as ' something new in the wa}' of atlases', appeared on ^larch 15. The atlas is to consist of 176 l
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