Contents. Chapters I., Water Circulation.—II., The Tank System.—III., Pipes and Joints.—IV., The Cylinder System.—V., Boilers for the Cylinder System.—VI., The Cylinder System.—VII., The Combined Tank and Cylinder System.—VIII., Combined Independent and Kitchen Boiler.—IX., Combined Cylinder and Tank System with Duplicate Boilers.—X., Indirect Heating and Boiler Explosions.—XI., Pipe Boilers.—XII., Safety Valves.—XIII., Safety Valves.—XIV., The American System.—XV., Heating Water by Steam.—XVI., Steam Kettles and Jets.—XVII., Heating Power of Steam.—XVIII., Covering for Hot Water Pipes.—Index.

Press Opinion.

"If all plumbers were to read this book, and if they followed the instructions given, there would, we are sure, be fewer accidents from household boiler explosions, and many lives might be saved. No doubt the majority of householders know or care little about the subject, but any one who wishes to adopt the most up-to-date system of supplying hot water throughout his house will be able to do so if he reads Mr. Hart's book and follows the instruction given. It is a work that all who have charge of domestic water supply should study. It is a practical and profitable book."—Wigar Observer.


Brewing and Botanical.

HOPS IN THEIR BOTANICAL, AGRICULTURAL AND TECHNICAL ASPECT, AND AS AN ARTICLE OF COMMERCE. By EMMANUEL GROSS, Professor at the Higher Agricultural College, Tetschen-Liebwerd. Translated from the German. Seventy-eight Illustrations. 1900. 340 pp. Demy 8vo. Price 12s. 6d.; India and Colonies, 13s. 6d.; Other Countries, 15s.; strictly net.

Contents. PART I., HISTORY OF THE HOP. PART II., THE HOP PLANT. Introductory.—The Roots.—The Stem and Leaves.—Inflorescence and Flower: Inflorescence and Flower of the Male Hop: Inflorescence and Flower of the Female Hop.—The Fruit and its Glandular Structure: The Fruit and Seed.—Propagation and Selection of the Hop.—Varieties of the Hop: (a) Red Hops; (b) Green Hops; (c) Pale Green Hops.—Classification according to the Period of Ripening: 1. Early August Hops; 2. Medium Early Hops; 3. Late Hops.—Injuries to Growth: Malformations; Diseases Produced by Conditions of Soil and Climate: 1. Leaves Turning Yellow, 2. Summer or Sun-brand, 3. Cones Dropping Off, 4. Honey Dew, 5. Damage from Wind, Hail and Rain; Vegetable Enemies of the Hop: Animal Enemies of the Hop.—Beneficial Insects on Hops.

PART III., CULTIVATION. The Requirements of the Hop in Respect of Climate, Soil and Situation: Climate; Soil; Situation,—Selection of Variety and Cuttings.—Planting a Hop Garden: Drainage; Preparing the Ground; Marking-out for Planting; Planting; Cultivation and Cropping of the Hop Garden in the First Year.—Work to be Performed Annually in the Hop Garden: Working the Ground; Cutting; The Non-cutting System; The Proper Performance of the Operation of Cutting: I. Method of Cutting: Close Cutting, Ordinary Cutting, The Long Cut, The Topping Cut; II. Proper Season for Cutting: Autumn Cutting, Spring Cutting: Manuring; Training the Hop Plant: Poled Gardens, Frame Training; Principal Types of Frames: Pruning, Cropping, Topping, and Leaf Stripping the Hop Plant; Picking, Drying and Bagging.—Principal and Subsidiary Utilisation of Hops and Hop Gardens.—Life of a Hop Garden; Subsequent Cropping.—Cost of Production, Yield and Selling Prices. PART IV.—Preservation and Storage.—Physical and Chemical Structure of the Hop Cone.—Judging the Value of Hops. PART V.—Statistics of Production.—The Hop Trade.—Index.

Press Opinions.

"The subject is dealt with fully in every little detail; consequently, even the veriest tyro can take away some useful information from its pages."—Irish Farming World.

"Farmers are but little given to reading; but nowadays brewers have to study their trade and keep abreast of its every aspect, and as far as regards our trade, to them this book especially appeals, and will be especially useful."—Licensed Victuallers' Gazette.

"Like an oasis in the desert comes a volume upon the above subject, by the Professor at the Higher Agricultural College, Tetschen-Liebwerd, Germany, who has been fortunate enough to obtain an excellent translator from the German in the person of Mr. Charles Salter. The paucity of works upon the history and cultivation of hops is surprising considering the scope it gives for an interesting and useful work."—Hereford Times.

"We can safely say that this book deals more comprehensively and thoroughly with the subject of hops than any work previously published in this country.... No one interested in the hop industry can fail to extract a large amount of information from Professor Gross's pages, which, although primarily intended for Continental readers, yet bear very closely on what may be termed the cosmopolitan aspects of the science of hop production."—South Eastern Gazette.

"This is, in our opinion, the most scholarly and exhaustive treatise on the subject of hops, their culture and preservation, etc., that has been published, and to the hop grower especially will its information and recommendations prove valuable. Brewers, too, will find the chapter devoted to 'Judging the Value of Hops' full of useful hints, while the whole scope and tenor of the book bear testimony to the studious and careful manner in which its contents have been elaborated."—Brewers' Journal.

"Considering the extent to which this country draws its hop supplies from abroad, this translation of Professor Gross's volume will prove an interesting and instructive addition to the library of any brewer or brewers' chemist, the more so as the work of translation has been admirably carried out in simple and vigorous English.... The volume is one of a valuable series of special technical works for trades and professions the publishers are issuing, and is the first so far dealing with the brewing industry."—Burton Mail.

"A work upon the above subject must be welcomed if for no other reason than the dearth of books dealing with so interesting a theme, but fortunately apart from this the book will afford excellent reading to all interested in hops and their culture. Professor Gross takes one over the whole field, by commencing with the earliest history of the plant—so far back as the days of ancient Greece—and from both practical, theoretical and scientific standpoints, deals with the cultivation, classification and formation of the hop.... In speaking of the production of new varieties sound information is given, and should be of value to those who are always in search of improvements."—Hereford Journal.

"This work is, without doubt, the most thorough and extensive compilation on hops ever yet offered to the public, and for this reason should be warmly welcomed and appreciated by men interested in the subject. Although primarily written for those engaged in the industry abroad, and mainly Continental in theory and practice, it nevertheless appeals to those connected with the hop growing and brewing business in England, not only by way of a comparison, but also as an instruction. The volume is at once practical and scientific, is well got up, and teems with illustrations and statistics. In a word, it is a book that should find its way into the hands of all who are occupied in hop production and distribution at home; and it also contains valuable information and suggestions for the brewers themselves."—Brewers' Guardian.