SCIENCE. 



[Vol. XVIII. No. 443 



NEO-DARWINISM AND NEO-LAMARCKISM. 



By LESTER F. WARD. 



Annual address of the President of the Biological 

 Society of Washington, delivered Jan. 24, 1891. A 

 historical and critical review of modern scientiac 

 thought relative to heredity, and especially to the 

 problem of the transmission of acquired characters. 

 The following are the several heads involved in the 

 discussion; Status of the Problem. Lamarckism, 

 Darwinism, Acquired Characters. Theories of He- 

 redity, Views of Mr. Galton, Teachings of Professor 

 Weismann, A Critique of Weismann, Neo-Darwln- 

 ism, Neo-Lamarckism, the American "School, "_ Ap- 

 plication to the Human Race. In so far as views 

 are expressed they are in the main in line with the 

 general current of American thought, and opposed 

 to the extreme doctrine of the non-transmissibility 

 of acquired characters. 



Price, postpaid, 25 cents. 



N. D. C. HODGES, 47 Lafayette Place, N, Y, 



Tj-OB SALE.- 



AN DER SEE, Eeisebriefe aus dem Moore 

 und von der Nordsee. Von Dr. Ernst 

 Doges. (1884.) 178 p. 12°. 25c. 



DIE KOLONIALREICHE UND KO- 

 LONISATIONSOBJEKTE DER GE- 

 GENWART. Kolonialpolitische und 

 kolonialgeographische Skizzen von Dr. 

 Emil Deckert. Leipzig, 188.5. 240 p. 12°. 

 25c. 



REISEERINNERUNGEN AUS AL- 

 GERIEN UND TUNIS. Von Dr. W. 

 Kobelt. Frankfurt am Main, 1885. Illus- 

 trated. 480 p. 8°. 7oc. 



TRANSMISSION ELECTRIQUE DU 

 TRAVAIL MECANIQUE. Determina- 

 tion des Elements de la Transmission. Par 

 A. Hillairet. Paris, 1884. Illustrated. 

 79 p. 8°. 25c. 



PIE BEZIEHUNGEN ZWISCHEN 

 GEISTESSTORUNG UND VER- 

 BRECHEN. Nach Beobachtungen iu der 

 Irrenanstalt Dalldorf von Dr. W. Sander 

 und Dr. A. Eichter. Berlin, 188S. 404 p. 

 8°. 75c. 



BLATTER FUR GEFANGNISS- 

 KUNDE. Organ des Vereins der deuts- 

 chen Strafanstaltsbeamten. Eedigirt von 

 Gustav Ekert. Neunzehnter Band, 1 u. 3 

 Heft. Heidelberg, 1884. 151 p. 8°. 2oc. 



KRITISCHE UND EXPERIMEN- 

 TELLE BEITRAGE ZUR LEHRE 

 VON DER FUTTERUNGSTUBER- 

 CULOSE. Von Dr. F. Wesener. Frei- 

 burg, 1885. 98 p. 8°. 25c. 



GEDENKTAGE DER PSYCHIATRIE 

 ALLER LANDER. Von Dr. Heinrich 

 Laehr. Berlin, 1885. 65 p. 8°. 50c. 



ZUR KUNSTLICHEN ERNAHRUNG 

 DER SAUGLINGE IN DEN DREI 

 ERSTEN LEBENSMONATEN. Ex- 

 perimentell plinische Untersuchung von 

 Dr. H. Schoppe. Tvibingen, 1884. 83 p. 

 8°. 25c. 



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For exchange or sale at a s 





elaborate micro- 

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I would like to exchange some twenty vols, of the Sec- 

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Unbound volumes of the Electrician (London), the 

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 Gray, Leidy, Massey, and Rollestin's Forms of Animal 

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Will exchange a new Thomson reflecting astatic gal- 

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HANDBOOK OF METEOROLOGICAL TABLES. 



By Asst. Prop. H. A. Hazen. 

 127 pp. 8°. 



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