SCIENCE 



LEntered at the Posi-OfBce of New York, N.Y., as Second-Class Matter.J 





lii 



^ 



Ninth Yeak. 

 Vol. XVII. No. 423. 



NEW YORK, Mabch 13, 1891. 



Single Copies, Ten Cents. 

 $3.50 Pee Year, in Advance. 



Alfbed R. Wallace says in Nature, Feb. 12, 1891 : " Oa the whole, the work [Morgan's Animal Life and Intelligence] will prove a 

 boon to all who desire to obtain a general knowledge of the more interesting problems of modern biology and psychology by the perusal 

 of ajsingle compact, luminous, and very readable volume." 



ANIMAL LIFE AND INTELLIGENCE. 



By C. LLOYD MORGAN, F.G.S., 



Professor in and Dean of University College, Bristol, En; 



leMQSE 



ranasnjv lEuopBN AJt!.iqti °^^ Biology," etc. 

 8vo. Cloth, xvi + 512 pages. Illustrated., ijy luaii, ^v,„..j.„. d, $4. 



The titles of the chapters of this important work are: — 



VIII. ^Mental Processes in Man. 



IX. — Mental Processes in Animals: Their Powers of Percep- 

 tion and Intelligence. 

 X. — The Feelings of Animals: Their Appetences and Emo- 

 tions. 

 XI. — Animal Activities: Habit and Instinct. 

 XII.— Mental Evolution. 



I. — The Nature of Animal Life. 

 II. — The Process of Life. 

 III. — Reproduction and Development. 

 IV. — Variation and Natural Selection. 

 V. — Heredity and the Origin of Variation. 

 VI. — Organic Evolution. 

 VII. — The Senses of Animals. 



From Professor C. 0. Whitman, of Clark University, Editor of the Journal of Morphology: " Dr. Morgan's ' Animal Life and In- 

 telligence ' is one of the very few really excellent philosophical treatises on this subject. The work is characterized throughout with a 

 candor, originality, and vigor of thought that are truly refreshing and stimulating. It is sure to be heartily welcomed by all biological 

 students, and by general readers as well." 



BIOLOGICAL LECTUBBS. 



Delivered at the Marine Biological Laboratory, Wood's Holl, 1890. 12mo. Cloth. Illustrated, vii + 250 pages. By mail, Sl-85. 



The lectures and the authors are : I. Specialization and Organization, Companion Principles ot All Progress. --The most 

 Important Need of American Biology.— Prof. C. O. Whitman, Clark University. II. The Naturalist's Occnpatlon: 1, General 

 Survey. 2. A Special Problem.— Prof. C. O. Whitman. III. Some Problems of Annelid Morphology.— Prof, E. B. Wilson, Bryn 

 Mawr College. IV. The Gastriea Theory and its Successors.— Dr. J. P. McMurkich, Clark University. V. Weismann and maupas 

 on the Origin of Death.— Dr. Edward G. Gardiner, Mass. Institute of Technology. VI. Evolution and Heredity.- Prof . Henry Fair- 

 field OsBORN, Princeton College. VII. Tiie Kelationships of the Sea-Spiders. — Dr. T. H. Morgan, Johns Hopkins University. VIII. On 

 Caryoktnesls.— Dr. S. Watase, Clark University. IX. The Ear of Man: Its Past, Present, and Future.— Dr. Howard Avers, Lake 

 Laboratory, Milwaukee. X. The Study of Ocean Temperatures and Currents. — Prof. William Libbkt, Jr., Princeton College. 



JOUBWAL OF MOBPMOLOGT. 



A journal of animal morpholo^, deyoted principally to embryologioal, anatomical, and histological subjects. Edited by C. O. Whitman, Professor 

 of Biolop:y, Clark University, Worcester, Mass. Crown 8fo. Two or three numbers a year, of 100 to 150 pages each, with from five to ten double 

 plates. Subscription price, $3.00 per number; single numbers, ©3.50. Agent for Great Britain, William S. Collins, 137 Great Portland Street. London; 

 Agents for Germany, Friedlander & Sohn, Berlin, N. W. Carlstrasse, 11. 

 Nature ^London): " The editors have fulfiJled thus far the highest expectations of their most sincere well-wishers, 

 of the biological brotherhood throughout the world." 



Qd merited the confidence and support 



GINN & COMPANY, Publishers, Boston, New York, and Chicago, 



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