THE INTERNATIONAL SCIENTIFIC SERIES. 



D. Appleton & Co. have the pleasure of announcing that they have made arrange. 

 merits for publishing, and have recently commenced the issue of, a Series of Popu- 

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

 of iecent 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 has spent much time in Europe, 

 arranging with authors and publishers. 



FORTHCOMING VOLUMES. 



Prof. W. KINGDON CLIFFORD, M. A. The First Principles of the Exact 

 Sciences explained to the Non-mathematical. 



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 ODLING, F. R. S. The Old Chemistry viewed from the New 

 Stand-joint. 



W. LAUDER LINDSAY, M. D, F. R. S, E. Mind in the Lower Animals. 

 Sir JOHN LUBBOCK, Bart, F. R. S. On Ants and Bees. 



Prof. W. T. THISELTON DYER, B. A., B. Sc. Form and Hatit in Flowering 

 Plants. * 



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



Prof. MICHAEL FOSTER, M. D. Protoplasm and the Cell Theory. 



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, Moun. 



tains, Plains, Rivers, Lakes; How they were Produced, and how they have 



been Destroyed. 



Prof. RUDOLPH VIRCHOW (Berlin University). Morbid Physiological Action. 

 Prof. CLAUDE BERNARD. History of the Theories of Life. 



D. APPLETON & CO., Publishers, 549 & SS , Broadway, N. Y. 



