ll SCIENCE—ADVERTISEMENTS 
Waves of the Sea and other 
Water Waves 
By VAUGHAN CORNISH, 
Doctor of Science, Manchester University 
Fifty illustrations from photographs taken by the author. Cloth, pp. 375. Price, $2.50 net. 
A critical examination of observations and measurements of waves and the discovery of the mode of their 
production. The facts here set down in a very interesting manner are the results of fifteen years’ study of 
wave action in lakes and rivers as well as upon the ocean at different latitudes. 
A few of the topics ably presented are :— 
SIZE and SPEED of DEEP SEA WAVES;; the numerical relation between length of fetch of wind and 
height of storm waves; the wave length of the swell which reaches shores after storms: the give and 
take between air and water in the development of waves; the effect of squalls and gusts upon waves. 
On the action of sea waves to transportshingle, sand and mud. The building up of beaches—the undertow. 
Stationary and progressive waves in rivers, flood waves, tidal bores, cross-stream progressive waves, sounds 
of running water, the gushing 
motion of cataracts, whirls and 
eddies, conical structures pro- 
duced by the breaking up of a ORDER BLANK 
Lec ere, tack Of) 5 1 OPEN COURT PUBLISHING |CO: 
See 623-633 S. Wabash Ave., Chicago 
This book offers an attractive 
introduction to physiography and 
the study of more difficult wave OFM EE anon n neon neon ences cceeneernennenneecneesnsnnssnessnennesendecnerneecnscsnernerveecversnecnetners= 
phenomena in earthquakes, atmo- 
spheric disturbances, as well as 
wave action in relation to engi- Address 
neering structures. 
SECOND EDITION, NOVEMBER, 1970 
AMERICAN MEN OF SCIENCE 
A BIOGRAPHICAL DIRECTORY 
EDITED BY J. MicKEEN CATTELL 
A Biographical directory requires revision if it is to maintain its usefulness. Nearly a third of the names in the 
present edition are new, and the sketches which appeared in the first division have in nearly every case been revised. The 
amount of work required to prepare the revision has been as great as that given to the first edition. There has been no 
change in the general plan of the work. Greater strictness has been observed in confining its scope to the natural and 
exact sciences, and for this reason a few names included in the first edition have been omitted. Efforts have been exerted to 
make the book as complete and accurate as possible. There are of course omissions, if only because some men will not 
reply even to repeated requests for the information needed. The thousand leading men of science have been again selected 
by the methods that were used before, and stars have been added to the subjects of research in the case of 269 new men who 
have obtained places on the list. The editor’s object in selecting this group of scientific men has been to make a study of 
the conditions on which scientific research depends and so far as may be to umprove these conditions. ‘There are printed tn 
an appendix the two statstical studies that have been made.—From the Preface to the Second Edition. 
The second edition of the Directory extends to more than 600 pages and contains more than 5500 sketches 
I is well printed on all rag paper and bound in buckram with leather label. Although the work has been 
inoreased in size by more than 50 per cent., it is sold at the same price as the first edition. 
Price: Five Dollars, net, Postage paid 
THE SCIENCE PRESS 
GARRISON, N. Y. LANCASTER, PA. 
SUB-STATION 84, NEW YORK CITY. 
Kindly send mea copy of Waves of the Sea, for which I enclose postal 
for $2.50 
