EVOLUTION. 



A THEORY OF DEVELOPMENT AND BEREDITY. By 



Henry B. Orr, Ph.D., Professor at the Tulane dniveraity of Louisiana. 



Crown 8vo. 8s. net. 



SC01\SMAX. — 'Professor Orr does not profess to have proved, <>r worked <>ut in 

 its detail, his new " Theory of Development and Heredity. But he has stated it 

 with admirable perspicuity, ami the Bolution which he offers of the problem, " Sow 

 are changes brought about in the structure of organisms, and how are these chas 

 transmitted to succeeding generations? " deserves thoughtful examination as i 

 a key to certain of the deeper secrets of life and growth, both bodily and mental. 1 



ORGANIC EVOLUTION AS THE RESULT OF THE 

 INHERITANCE OF ACQUIRED CHARACTERS ACCORDING 

 TO THE LAWS OF ORGANIC GROWTH. By Prof! G. II. Emeb. 



Translated by J. T. Cunningham, M.A., F.R.S.E. 8vo. L2a 6rf. 



THE COLLECTED WORKS OF THOMAS BENRY 



HUXLEY, F.R.S. In Monthly Volumes. Globe 8vo. 5*. each Volume. 



[ The A''-- rsL y " 

 Vol. I.— METHOD AND RESULTS. 



Vol. II.— DARWINIANS 



Vol. III.— SCIENCE AND EDUCATION. 

 Vol. IV.— SCIENCE AND HEBREW TRADITION. 

 Vol. V.— SCIENCE AND CHRISTIAN TRADITION. 

 Vol. VI.— HUME. 

 Vol. VII.— ETHICAL AND PHILOSOPHICAL ESSAYS. 

 Vol. VIII.— MAN'S PLACE IN NATURE. 

 Vol. IX.— ESSAYS IN SCIENCE. 



SOME VOLUMES OF "NATURE" SERIES. 



Crown 8vo. Cloth. 



CHARLES DARWIN. MEMORIAL N< >TICES reprinted from 



"Nature." By Thomas H. Huxley, F.R.S., G. J. Romanes, F.R.S., Sir 

 Archibald Geikie, F.R.S., and W. T. Dyer, F.R.S. 2s. 6rf. 



THE SCIENTIFIC EVIDENCES OF ORGANIC EVOLU- 

 TION. By George J. Romanes, F.R.S. 2*. <;./. 



ARE THE EFFECTS OF USE AND DISUSE INHERITED 1 



An Examination of the View held by Spencer and Darwin, By 

 W. Platt Ball. 2s. 6d. 



ON THE ORIGIN AND METAMORPHOSES OF [NSECTS. 



With Numerous Illustrations. By Sir .John LUBBOCK, M.l'.. F.R.S 

 3s. (5d. 



MACMILLAN AND CO., LONDON. 



