33 



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. 



i 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 Per- 

 formance of the Operation of Cutting: I. Method of Cutting: Close Cutting, Ordinary Cutting, 

 The Long Cift, 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. 



" Like an oasis in the desert comes a volume upon the above subject." Hereford Times. . 



"This is, in our opinion, the most scholarly and exhaustive treatise on the subject of hops 

 that has been published." Brewers' Journal. 



Wood Waste Utilisation. 



THE UTILISATION OF WOOD WASTE. Translated from 

 the German of ERNST HUBBARD. Crown 8vo. 1902. Fifty Illustra- 

 tions. Price 5s. ; India and Colonies, 5s. 6d. ; Other Countries, 6s. net. 



Contents. 



Chapters I., General Remarks on the Utilisation of Sawdust. II., Employment of Saw- 

 dust as Fuel, with and without Simultaneous Recovery of Charcoal and the Products of 

 Distillation. III., Manufacture of Oxalic Acid from Sawdust (1) Process with Soda Lye ; 

 (2) Thorn's Process ; (3) Bohlig's Process. IV., Manufacture of Spirit (Ethyl Alcohol) from 

 Wood Waste Patent Dyes (Organic Sulphides, Sulphur Dyes, or Mercapto Dyes). V., 

 Artificial Wood and Plastic Compositions from Sawdust Production of Artificial Wood 

 Compositions for Moulded Decorations. VI., Employment of Sawdust for Blasting Powders 

 and Gunpowders. VII., Employment of Sawdust for Briquettes Employment of Sawdust 

 in the Ceramic Industry and as an Addition to Mortar Manufasture of Paper Pulp from 

 Wood Casks. VIII., Various Applications of Sawdust and Wood Refuse Calcium Carbide 

 Manure Wood Mosaic Plaques Bottle Stoppers Parquetry Fire-lighters Carborun- 

 dum. IX., The Production of Wood Wool Bark. Index 



