SCIENCE—ADVERTISEMENTS 



JUST OUT 



The 

 Marine Decapod Crustacea 



of California 



By WALDO L. SCHMITT 



470 pages, 50 plates, 165 figures in text. 

 Paper, $5.00. Carriage extra, weight 3}^ lbs. 



More than 200 valid species, including 

 eleven new ones, are systematically described 

 in this exhaustive treatise on these interesting 

 and, in many cases, economically important 

 forms. Forty-seven occur in San Francisco 

 Bay and receive special treatment. The 

 volume also includes a detailed discussion of 

 the geographical distribution of the decapods 

 and the influence upon them of salinity, tem- 

 perature and depth. 



The University of California Press 



Berkeley, California 



19 East 47th Street, New York 



REVISED 



Business Kng^lisli 

 and Correspondence 



By DAVIS and LINGHAM 



A well-known book which meets 

 actual class needs for a practical, 

 sane teachable textbook. From 

 the first page to the last it 

 teaches English, the sort of Eng- 

 lish that the pupils will be con- 

 stantly called on to use in later life. 

 The book has been thoroughly 

 rewritten. Much new matter 

 has been added, including text 

 matter, model letters, and exer- 

 cises. It is thoroughly up-to- 

 date in every respect. 



GINN AND COMPANY 



70 Fifth Avenue NEW YORK 



For Public Health Officials 

 JUST PUBLISHED 



PUBLIC HEALTH SURVEYS— What They Are, How to 

 Make Them, How to Use Them. 



By Murray P. Horwood, Ph.D., Instructor in Public Health, Massachusetts 

 Institute of Technology. With a Foreword by the late William T. Sedgwick 

 and an Introduction by George C. Whipple. An authoritative guide to all those 

 who contemplate making public health surveys. 



403 pages. 4I by 7 inches. 94 figures. Flexible binding, $4.50 postpaid. 



Other Wiley Books. 



SANITATION PRACTICALLY APPLIED. 



By Harold Bacon Wood, M.D. 473 

 pages. 5i by 8. Illustrated. Cloth, $3-50 



(There is also a Spanish Edition of this 

 book — "Sanidad Practicamente Aplicada," 

 by Dr. Roberto Gayon — $6.00.) 



A MANUAL FOR HEALTH OFFICERS. 



By J. Scott MacNutt, A.B. 650 pages. 

 5i by 8. 4 charts. Cloth, $4.00 



VITAL STATISTICS. 



By George C. Whipple. 517 pages. 

 45 by 6f . 63 figures. Flexible, I4.00. 



JOHN WILEY &, SONS, Inc. 



432 Fourth Avenue 



New York 



