International Scientific Series. 



D. APPI.ETON & Co. have the pleasure of announcing that they have made arrange- 

 meats for publishing, and have recently commenced the issue of, a SICRIES OF POPULAR 

 MONOGRAPHS, or small works, under the above title, which will embody the results of 

 recent inquiry in the most interesting departments of advancing science. 



The character and scope of this series will be best indicated by a reference to the 

 names and subjects included in the subjoined list, from which it will be seen that the 

 cooperation of the most distinguished professors in England, Germany, France, and the 

 United States, has been secured, and negotiations are pending for contributions from 

 other eminent scientific writers. 



The works will be issued in New York, London, Paris, Leipsic, Milan, and St. 

 Petersburg. 



The INTERNATIONAL SCIENTIFIC SERIES is entirely an American project, and was 

 originated and organized by Dr. E. L. Youmans, who spent the greater part of a year 

 in Europe, arranging with authors and publishers. The forthcoming volumes are as 

 follows : 



Prof. LOMMEL (University of Erlangen), 

 Optics. (In press.) 



Rev. M. J. BERKELEY, M. A., F. L. S., 

 and M. COOKE, M. A., LL. D., 

 Fungi / thtir Nature, Itifluences, 

 and Uses. (In press.) 



Prof. W. KiNGDON CLIFFORD, M. A., The 

 First Principles of the Exact Sciences 

 explained to the non-mathematical, 



Pro T. H. HUXLEY, LL. LX, F. R. S., 

 Bodily Motion and Consciousness, 



Dr. W. B. CARPENTER, LL. D., F. R. S., 

 The Physical Geography of the Sea. 



Prof. WILLIAM ODLONG, F. K. S., The Old 

 Chemistry viewed from the New 

 Standpoint. 



W. LAUDER LINDSAY, M. D., F. R. S. E., 

 Mind in the Lower A nimals. 



Sir JOHN LUBBOCK, Bart , F. R. S., The 

 A ntiquity of Man. 



Prof. W. T. THISELTON DYER, B. A., 

 B. Sc., Form and Habit in Flower- 

 ing Plants: 



Mr. J. N. LOCKYER, F. R. S., Spectrum 

 A nalysis. 



Prof. MICHAEL FOSTER, M. D., Proto- 

 plasm and the Cell Theory. 



Prof! W. STANLEY JEVONS, Money : and 

 the Mechanism of Exchange. 



H. CHARLTON BASTIAN, M. D., F. R. S., 

 The Brain as an Organ of Mind. 



Prof. A. C. RAMSAY, LL. D.. F. R. S., 

 Earth Sculpture : Hills, Valleys, 

 Mountains, Plains, Rivers, Lakes,' 

 how they were produced, and how 

 they have been destroyed. 



Prof. RUDOLPH VIRCHOW (Berlin Univer- 

 sity), Morbid Physiological A ction. 



Prof. CLAUDE BERNARD, Physical and 

 Metaphysical Phenomena of Life. 



Prof. H. SAINTE-CLAIRE DEVILLE, An 

 Introduction to General Chemistry. 



Prof. WURTZ, Atoms and the Atomic 

 Theory. 



Prof. DE QUATREFAGES, The Negro 

 Races. 



Prof. LACAZE-DUTHIERS, Zoology since 



Cuvier. 



Prof. BERTHELOT, Chemical Synthesis. 

 Prof, J. ROSENTHAL, General Physiology 



of Muscles and Nerves. 

 Prof. JAMESD. DANA, M. A., LL. D., On 



Cephalization ; or, Head-Characters 



in the Gradation and Progress of 



Prof. S/W. JOHNSON, M. A., On the Nu- 

 trition of Plants. 



Pro AUSTIN FLINT, Jr., M. D., The 

 Nervous System and its Relation to 

 the Bodily Functions. 



Prof. W. D. WHITNEY, Modern Linguis- 

 tic Science. 



Prof. C. A. YOUNG, Ph. D. (of Dartmouth 

 College), The Sun. 



Prof. BERNSTEIN (University of Halle), 

 Physiology of the Senses. 



Prof. FERDINAND COHN (Breslau Univer- 

 sity), Thallophytes (Algcee, Lichens, 

 Fungi}. 



Prof. HERMANN (University of Zurich), 

 Respiration. 



Prof. LEUCKART (University of Leipsic), 

 Outlines of A nimal Organization. 



Prof. LIEBREICH (University of Berlin), 

 Outlines of Toxicology. 



Prof. KUNDT (University of Strasburg), 

 On Sound. 



Prof. REES (University of Erlangen), On 

 Parasitic Plants. 



Prof. STEINTHAL (University of Berlin), 

 Outlines of the Science of Language. 



E. ALGLAVE (Professor of Constitutional 

 and Administrative Law at Douai, and 

 of Political Economy at Lille), The 

 Primitive Elements of Political Con- 

 stitutions. 



P. LORAIN (Professor of Medicine, Paris), 

 Modern Epidemics. 



Prof. ScHtJTZENBERGER (Director of the 

 Chemical Laboratory at the Sorbonne), 

 On Fermentations. 



Mons, DEBRAY, Precious Metal*. 



