IMPORTANT BOOKS 



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A GERMAN-ENGLISH DICTIONARY FOR 



CHEMISTS. By AUSTIN M. PATTERSON, Ph.D. 

 (Johns Hopkins), formerly Editor of Chemical Abstracts ; Editor 

 of Chemical Terms for Webster's New International Dictionary. 



This book contains over 30,000 definitions. It includes terms from all branches of 

 Chemistry and the various chemical industries, and such terms from allied sciences 

 as are likely to appear in chemical literature. The book is up-to-date on radio-activity, 

 colloidal chemistry, etc. 



332 pages, bound in flexible cover. Price 15s. net. 



CHEMISTRY OF PULP AND PAPER 



MAKING. By EDWIN SUTERMEISTER, S.B., Chief 

 Chemist, S. D. Warren Company Paper Mills. 



To assist the technical man, who has a fair knowledge of the elements of chemistrj', 

 to understand the chemical processes involved in the manufacture of pulp and paper. 



479 P^ges ; 55 figures; 31 full-page photomicrographs. Price368.net. 



PRINCIPLES OF HUMAN GEOGRAPHY. 



By ELLSWORTH HUNTINGTON, Research Associate in 

 Geography, Yale University, and the late S. W. CUSHING, 

 formerly of Salem Normal School. 



This book reveals geography in a new light to teacher and pupil. It treats the 

 relation of geographical environment to man's activities — in fact, that part of this 

 important subject which is most interesting, most practical, and most calculated to 

 call forth real thought and effort on the part of the student. 



444 pages ; 1 18 figures, including ma>iy full-page photographs. Price 21Sa net. 



WIRELESS TELEGRAPHY, with Special 

 Reference to the Quenched-Spark 

 System. By Bernard leggett, a.m.i.e.e. 



The Publishers believe that this book fills a distinct gap in Wireless Literature, as 

 there is no volume in English, at present, which deals in any great detail with the 

 theory, installation, and maintenance of the Quenched-Spark System. 



502 pages ; 260 figures, and 70 full-page 'Halt-tone Plates. Price 30s. net. 



THE THEORY OF RELATIVITY. By robert 



D. CARMICHAEL, Professor of Mathematics in the University 

 of Illinois, 



The book as a whole has been written from the point of view of the usefulness of the 

 theory of relativity in the development of physical science. 



Second Edition, Revised and Enlarged, 112 pages. Price 8S> 6cl. net. 



TECHNICAL WRITING. By r a rickard, in 



which the Author endeavours to show the Engineer and Scientist 

 the correct method of writing reports, projects, investigations, and 

 scientific articles. 



CONTENTS.— General Principles. Naturalness. Clearness. Precision. Superlatives 

 and other Diluents. It, One, With, While. The Relative Pronouns. Prepositions and 

 Preposition-Verbs. Hyphens and Compound Words. Slovealiness. Jargon. Con- 

 struction of Sentences. Composition. Style. 



1 78 pages. Price 8S> 6cl> net. 



CHAPMAN & HALL, Ltd., 11 Henrietta St., Covent Garden, London, W.C.2 



Entertd at the New York Post Office as Second-class Matter. 



