SCIENCE-ADVERTISEMENTS 



IVew Scientific Journals 



The Annals of the Bolus Herbarium. Edited by H. H. W. Pbakson, Harry Bolus Professor of Botany 

 in the South African College, Capetown; Hon. Director, National Botanic Gardens, Kirstenbosch. 

 The Annals will be mainly concerned with botanical work directly or indirectly inspired by Dr. 

 Bolus and with investigations conducted in or in connection with the Bolus Herbarium and contributing 

 to knowledge of the vegetation of South Africa — in particular of its taxonomy, ecology, economic and 

 geographical botany. 



Subscription price, $3.75 ; single copies, $1.25 



Annals of Applied Biology. Edited for the Association of Economic Biologists by Professor H. 

 Maxwell Lefbot. 



A quarterly journal devoted to the interests of scientific agriculture. It is of special importance 

 to advanced workers in entomology, plant disease, diseases of animals, and forestry, and of great prac- 

 tical value to agricultural colleges, experiment stations, and departments of public health. 

 [Subscription price, $6.00 ; single copies, $2.00 



The Journal of Ecology. Edited for the British Ecological Society by Frank Cavers. 



An international quarterly journal which aims to give a comprehensive review of progress in the 

 entire field of ecology — including in its scope not only the relationships of plants to their environment but 

 also the interrelationship between plants and animals. 



Subscription price, $3.75 ; single copies, $1.25 



Subscriptions are received for volumes only. Prices on back volumes vary, and postage from London is charged 

 on back volumes and single numbers. 



Published in America for the Cambridge University Press 



BY 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO ILLINOIS 



Archives of Psychology 



RECENT NUMBERS 



Cora 



No. 27. A Statistical Study of Eminent Women. 



Sutton Castle. Pp. 90. 80 cents : cloth, 81.05. 



A work parallel to Professor Cattell's studies of eminent 

 men. 



No. 28. The Mental Capacity of the American Negro. 



Marion J. Mayo. Pp.70. 60 cents; cloth, 85 cents. 



A comparison of the achievements of white and colored 

 pupils, especially in high schools. 



No. 29. Experimental Studies in Judgment. H. L. HoUing- 



worth. Pp.119. 81 25; cloth, 81.60. 



A variety of judgments, simple and complex, are sub- 

 jected to study, with the special object of ascertaining some- 

 thing of " the way the mind works" in judging. 



No. 30. The Psychological Researches of James McKeen 

 Cattell : A Review by Some of his Pupils. Pp. 101. 

 81.00; cloth, $1.25. 



Reviews of Professor Cattell's work on reaction time, 

 reading and perception, the association test, psychophysics, 

 " order of merit," and individual differences are contrib- 

 uted by Messrs. Henmon, Dearborn, Wflls, Woodworth, 

 Hollingworth and Thorndike. References are also made 

 to recent developments in these several lines. 



THE SCIENCE PRESS 



LANCASTER. PA. SUB-STATION 84 : NEW YORK 



Just 'Published 



PRINCIPLES OF 

 STRATIGRAPHY 



BY 



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



PROFESSOR OF PALAEONTOLOGY IN 

 COLUMBIA UNIVERSITY 



Large Octavo, 1150 pages, with 264 illustrations In the text. 

 Cloth bound, price, $7.50. 



Send for descriptive circular 



A. G. SEILER & CO. 



PUBUSHERS 

 1224 Amsterdam Avenue NEW YORK. N. Y. 



