International Scientific Series, 



D. Appi^ton & Co. have the pleasure of announcing that they have made arrange- 

 DBents for publishing, and have recently commenced the issue of, a SicRiES of Popui-ar 

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

 recent inquirj' in the most interesting departments of advancing science. 



The character and scope of this series will be best indicated by a refeience 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, E' ranee, and the 

 United States, lias 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; tluir Nature^ InfiuenceSj 

 and Uses. (In press.) 



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

 First Principles of the Exact Sciences 

 explained to the fwn-fnathematical. 



Prof T. H. Huxley, LL. D., 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. R. 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 7ttiguzty o/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 Bastiaw, 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; 

 hoiu they were produced^ and how 

 they have been cCestroyed. 



Prof. Rudolph Virchow {Berlin Univer- 

 sity), Morbid Physiological Action. 



Prof Claude Bernard, Physical and 

 Metaphysical Phenomena of Life. 



Prof. H. Sainte-Claire Devillh, 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 

 Life. 



Prof S. W. Johnson, M. A., On the Nu- 

 trition of Plants. 



Prof Austin Flint, Jr., M. D., The 

 Nervous System and its Relation to 

 the Bodily Functions. 



Prof W. D. Whitney, Modem Linguis- 

 tic Science. 



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

 College), The Sun. 



Prof Bernstein (University of Halle), 

 Physiology of the Seftses. 



Prof Ferdinand Cohn (Breslau Univer- 

 sity), Thalhphyies {Algae, Lichens, 

 Fungi). 



Prof Hermann (University of Zurich), 

 Respiration. 



Prof Leuckart (University of Leipsic), 

 Outlines of Animal 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^ 

 OutliJtes 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- 

 stiiutions. 



P. Lorain (Professor of Medicine, Paris), 

 Modem Epidemics. 



Prof. Schutzenberger (Director of the 

 Chemical Laboratory at the Sorbonne)* 

 On Fermejitations. 



Mods. Debrav, Precious Metals. 



