Volume V. concerning THE THEORY AND PRACTICE OF BEATING.  Crown 8vo. 
     With photomicrographs and other Illustrations. Net =5/0=

CONTENTS:—­EARLY BEATING APPLIANCES—­THE HOLLANDER—­THE ECONOMY OF
BEATING—­DIFFICULTIES OF ARRIVING AT DEFINITE RESULTS—­BEHAVIOUR OF
DIFFERENT FIBRES—­“REFINING”—­POWER CONSUMPTION—­A COMPARISON OF TWO
DIFFERENT KINDS OF BEATERS—­POWER CONSUMED IN THE “BREAKING,” “BEATING,”
AND “REFINING” OF DIFFERENT MATERIALS—­DEALING WITH THE “CIRCULATION”
AND “AGITATION” IN A HOLLANDER—­COMPARISONS OF LARGE AND MEDIUM-SIZED
HOLLANDERS WHEN BEATING “HARD” AND “SOFT” STOCK—­TRIALS TO DETERMINE THE
RELATIVE MERITS OF STONE AND METAL BEATER-BARS—­TRIALS WITH BREAKERS,
REED BEATERS, AND KINGSLAND REFINERS—­A SYSTEM OF BEATING COMBINED WITH
A SYSTEM FOR CONTINUOUS BLEACHING—­BEATERS AND REFINERS—­POWER CONSUMED
IN GRINDING WOOD-PULP—­THE REDUCTION IN LENGTH OF FIBRES AT DIFFERENT
STAGES OF BEATING—­METHOD FOR DETERMINING THE “WETNESS” OF BEATEN
STUFF—­THE POSITION OF BEATERS IN OLD AND MODERN PAPER-MILLS—­APPENDIX.

=PARA RUBBER.  ITS CULTIVATION & PREPARATION.= By W. H. JOHNSON, F.L.S., Ex-Director of Agriculture, Gold Coast Colony, West Africa, Director of Agriculture, Mozambique Company, East Africa, Commissioned by Government in 1902 to visit Ceylon to Study the Methods employed there in the Cultivation and Preparation of Para Rubber and other Agricultural Staples for Market, with a view to Introduce them into West Africa.  Second Edition, rewritten and greatly enlarged, with numerous illustrations.  Demy 8vo, cloth Net =7/6=

THE WORLD’S PRODUCTION AND CONSUMPTION OF RUBBER—­THE PARA RUBBER
TREE AT HOME AND ABROAD—­PROPAGATION—­PLANTING AND CULTIVATING—­SOILS
AND MANURES—­PESTS—­LATEX—­COLLECTING THE LATEX—­RUBBER MANUFACTURE—­THE
ANTISEPTICISATION OF RUBBER—­DRYING AND PACKING RUBBER FOR EXPORT—­YIELD
OF PARA RUBBER FROM CULTIVATED TREES—­ESTABLISHMENT AND MAINTENANCE OF A
PARA RUBBER PLANTATION—­COMMERCIAL VALUE OF THE OIL IN HEVEA SEEDS.

=PASTRYCOOK AND CONFECTIONER’S GUIDE.= For Hotels, Restaurants, and the Trade in general, adapted also for Family Use.  By R. WELLS, Author of “The Bread and Biscuit Baker” =1/0=

=PETROL AIR GAS.= A Practical Handbook on the Installation and Working of Air Gas Lighting Systems for Country Houses.  By HENRY O’CONNOR, F.R.S.E., A.M.  Inst.  C.E., &c., author of “The Gas Engineer’s Pocket Book.” 80 pages with illustrations.  Crown 8vo, cloth Net =1/6=

DESCRIPTION OF PREVIOUS PLANTS AND SYSTEMS FOR COUNTRY-HOUSE
LIGHTING, DIFFICULTIES WITH, OBJECTIONS AND PRICES—­HISTORY OF PETROL
GAS, COMPARATIVE COSTS—­PETROL, ITS NATURE, DANGERS, AND STORING, NOTES
ON THE LAW REGARDING SAME—­BURNERS, DESCRIPTION OF SAME, PIPING,
MANTLES—­GENERAL PRINCIPLES OF PARTS OF PLANTS—­MOTIVE POWER
METERS—­WEIGHT-DRIVEN PLANTS—­ROOT’S BLOWERS—­HOT-AIR ENGINES—­PELTON
WATER-WHEELS—­DESCRIPTIONS OF VARIOUS PLANTS—­EXTRACT FROM AN ACT FOR
THE SAFE-KEEPING OF PETROLEUM AND OTHER SUBSTANCES OF A LIKE
NATURE—­APPENDIX—­USEFUL NOTES.