FERTILISERS AND MANURES 

 BY A. D. HALL, M.A., F.R.S., 



Director of the Rothamstcd Experimental Station ; Foreign Member of the 

 Royal Academy of Agriculture in Sweden. 



With Illustrations. Crown 8vo. 53. net. 



LIST OF CHAPTERS. 



CHAPTER I. INTRODUCTORY II. FERTILISERS CONTAINING NITROGEN III. THE 

 FUNCTION AND COMPARATIVE VALUE OF NITROGENOUS MANURES IV. PHOSPHATIC 

 MANURES V. THE FUNCTION AND USE OF PHOSPHATIC FERTILISERS VI. THE 

 POTASSIC FERTILISERS VII. FARMYARD MANURE VIII. PERUVIAN GUANO AND 

 OTHER MIXED FERTILISERS IX. MATERIALS OF INDIRECT FERTILISING VALUE X. 

 THEORIES OF FERTILISER ACTION XI. SYSTEMS OF MANURING CROPS XII. THE 

 VALUATION AND PURCHASE OF FERTILISERS XIII. THE CONDUCT OF EXPERIMENTS 

 WITH FERTILISERS INDEX. 



THE BOOK AND ITS PURPOSE. This volume, which is a companion volume to Mr. Hall's 

 book on "The Soil," deals not only with the history, origin and nature of the various 

 fertilisers and manures in use in this country, but also with their effect upon the yield and 

 quality of crops in practice. Much unpublished material has been drawn from the 

 Rothamsted experiments, but other series of field experiments have also been utilized to 

 furnish examples elucidating the principles upon which manuring should be based. As 

 befits a book intended for the practical man as well as the student of agricultural science, 

 a good deal of attention is given to the making, value and utilization of farmyard manure, 

 while another important chapter deals with the manuring of each of the staple crops of 

 the farm according to the character of the rotation in which it finds a place. 



THE SOIL 



AN INTRODUCTION TO THE SCIENTIFIC STUDY OF THE 

 GROWTH OF CROPS. 



BY A. D. HALL, M.A. (Oxon.), 



President of the Rothamsted Station (Lawes Agricultural Trust) ; 

 First President of the South-Eastern Agricultural College. 



With Diagrams. 53. net. 



The science of agriculture has advanced considerably since the first edition of this book 

 was published, so Mr. Hall has taken advantage of the need fora reprint to produce what 

 is practically a new book. A good deal of fresh material has been added, the latest 

 statistics have been included and the whole text has been thoroughly overhauled and 

 re-set, bringing everything completely up to date. 



" An excellent and up-to-date text-book. . . . The complete knowledge of the soil and 

 the part it plays in the nutrition of the plants requires investigation along three Hues, 

 which maybe roughly classed as chemical, physical or mechanical, and biological. It 

 is exactly these witu which the author deals, and although it is in no sense an exhaustive 

 treatise, a general outline has been given of all the recent investigations which have 

 opened up so many soil problems, and thrown new light on difficulties that are experienced 

 in practice." Gardeners' Chronicle. 



