SCIENCE-ADVERTISEMENTS 



Laboratory Exercises in 

 General Chemistry 



By Roland H. Williams, A.M., Head of De- 

 partment of Science, Horace Mann School, 

 and Instructor in Teachers College, Co- 

 lumbia University, and Walter G.Whit- 

 man, A.M., formerly Instructor in Science 

 State Normal School, Salem, Mass. 

 Price W.36; with loose-leaf binder, $0.72. 



In this manual "-" seventy-six exercises 

 adapted for classes n elementary chemistry. 

 The loose-leaf plan makes it possible to adapt 

 the man _il to the order of topics in any text- 

 book. 



Included are general laboratory directions, 

 lists of chemicals and apparatus, emergency 

 measures in case of accident, useful tables, 

 dravrings, etc. Each exercise sheet has a list 

 of the chemicals required and directions for per- 

 forming that exercise, while a blank space is 

 provided for the student's notes, which are 

 suggested by pertinent questions. 



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Barker 



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 Young's 



Manual of Soil Physics 



44 exercises, with blank pages for notes 

 In Biflex Binder, 65 cents 



Just those practical exercises necessary 

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 It is not confined strictly to soil physics, 

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 study: — the origin of soil ; its texture 

 and structure ; soil heat ; the movements, 

 use, and conservation of soil water ; the 

 effect of organic matter on soil pro- 

 ductivity ; and simple methods of soil 

 examination. 



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Just 'Published 



Naturcil History of 

 HAWAII 



By William Alanson Beyan, B.S., Professor of 

 Zoology and Geology in the College of Hawaii. 



A reliable and readable reference book on things 

 Hawaiian. Suited to the needs of the general reader, 

 student, library or scientific worker. 



ILLUSTRATED with 117 full page plates from 441 photo- 

 graphs elucidating the ethnology of the native people, the 

 geology and topography of the islands and figuring more 

 than 1000 of the common or interesting species of plants 

 and animals to be found in the native and introduced fauna 

 and flora of Hawaii. 



CONTENTS IN 37 CHAPTERS :— Section 1, The Hawaiian 

 People; Section 2, The Geology, Geography and Topogra- 

 phy of the Hawaiian Islands; Section 3, The Flora of the 

 Group; Section 4, Agriculture and Horticxilture in Hawaii; 

 Section 5, The Animal Life of the Group; Complete Index, 

 Glossary and Compendium. 



Over 500 pages of text 7xl0i inches, Cloth bound. 

 Price postpaid $5.50 (net). 



ADDRESS ORDERS DIRECT TO THE AUTHOR 

 P. O. BOX 38 HONOLULU, HAWAII 

 Or to the following authorized distributors: 

 Thnmi*s Limited, Fort St., Honolulu, Hawaii. 

 H. S. Crocker Co., 565-571 Market St., San Francisco. 

 G. E. Stechert & Co., 151-155 W. 25th St., New York. 

 G. E. Stechert & Co., 2 Star Yard, Carey Street W. C, London. 



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 pages 



PRINCIPLES OF 



STRATIGRAPHY 



BY 



AMADEUS W. GRABAU, S.M.. S.D. 



PROFESSOR OF PALAEONTOLOGY IN 

 COLUMBIA UNIVERSITY 



Large Octavo, 1150 pages, with 254 illustrations in the text. 

 Cloth bound, price, $7.50. 



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A. G. SEILER & CO. 



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 1224 Amsterdam Avenue NEW YORK, N. Y. 



