24 CHARLES GRIFFIN & CO.'S PUBLICATIONS. 



In Large 8vo. Cloth. Pp. i-xxiii + 271. With 147 Illustrations. 



15s. net. 

 A MANUAL OF 



THE PRINCIPLES OF SEWAGE TREATMENT. 



By PROF. DUNBAR, Director of the Institute of State Hygiene, Hamburg. 

 ENGLISH EDITION BY HARRY T. CALVERT, M.Sc., PH.D., F.I.C., 



Chief Chemical Assistant, West Biding of Yorkshire Rivers Board. 

 ABRIDGED CONTENTS. HISTORICAL DEVELOPMENT OF THE SEWAGE PROBLEM. Growth 

 of River Pollution. Legal Measures of Central and Local Authorities. Rise and Develop- 

 ment of Methods of Sewage Treatment. Earlier Views, their Object and Utility. PRESENT 

 POSITION OF SEWAGE TREATMENT. The Characteristics of Sewage. Objects of Pre- 

 cipitation Works. Description for the Removal of Suspended Matters. Methods for the 

 Removal of Putrescibility. The Disinfection of Sewage. Supervision and Inspection 

 of Sewage Disposal Works. The Utility and Cost of the various Methods of Sewage 

 Treatment. INDEX. 



" We heartily commend the book as a peculiarly fair and impartial statement of the 

 present position of the sewage problem." Lancet. 



In Medium 8vo. Cloth. Pp. i-xiii + 356. With Tables, Illustrations 



in the Text, and 36 Plates. 21s. net. 



MODERN METHODS OF 



SJ3TSTAGrE PURIFICATION. 



A Guide for the Designing and Maintenance of Sewage Purification Works. 



BY G. BERTRAM KERSHAW, F.R.S.I., F.R.M.S., F.G.S., &c., 

 Engineer to the Royal Commission on Sewage Disposal. 



CONTENTS. Introduction. Historical. Conservancy Methods, &c. Sewerage 

 Systems. Rainfall, Storm Water. Variations in Flow of Sewage. Classification and 

 Composition of Sewages. Considerations to be observed in selecting the Site for Sewage 

 Disposal Works. Preliminary Processes. Disposal of Sludge. Land Treatment of 

 Sewage. Contact Beds. Percolating Filters. Trades' Wastes. Miscellaneous. Pre- 

 cipitation Works in Actual Operation. INDEX. 



"A large and comprehensive work . . . replete with information." Journal 

 Royal Sanitary Institute. 



Large 8vo. Handsome Cloth. Price 16s. net. 



FIRE AND EXPLOSION RISKS: 



A Handbook of the Detection, Investigation, and Prevention of Fires and Explosions. 



BY DR. VON SCHWARTZ, 



Translated from the Revised German Edition by C. T. C. SALTER. 

 ABRIDGED GENERAL CONTENTS. Fires and Explosions of a General Character. 

 Dangers arising from Sources of Light and Heat. Dangerous Gases. Risks Attending 

 Special Industries. Materials Employed. Agricultural Products. Fats, Oils, and 

 Resins-Mineral Oils and Tar. Alcohol, &c. Metals, Oxides, Acids, &c. Lightning 

 Ignition Appliances, Fireworks. 



"The work affords a wealth of information on the chemistry of fire and kindred 

 topics." Fire and Water. 



" A complete and useful survey of a subject of wide interest and vital importance." 

 Oil and Colourman's Journal. 



In Handsome Cloth. Pp. i-xiii 4 256. With 59 Illustrations. 6s. net. 



SMOKE ABATEMENT. 



A Manual for the Use of Manufacturers, Inspectors, Medical Officers of 



Health, Engineers, and Others. 

 BY WILLIAM NICHOLSON, 



Chief Smoke Inspector to the Sheffield Corporation. 

 " We welcome such an adequate statement on an important subject." Britiih 



Medical Journal. 



See also 



THE MAIN DRAINAGE OF TOWNS, . . . page 6. 



REFUSE DISPOSAL ,,6. 



AND MODERN DESTRUCTOR PRACTICE, ... ,,6. 



LONDON : CHARLES GRIFFIN & CO., LTD., EXETER STREET, STRAND. 



