INTERNATIONAL SCIENTIFIC SERIES. 



VOLUMES IN PREPARATION. 



THE SXTN. By Prof. Young, of Princeton College. With numerous Illustrations 



CHROMATICS. From the Modem Point of View. By Prof. O. N. Rood, of 

 Columbia College, 



ILLUSTRATIONS OF THE LOGIC OP SCIENCE. By Charles .S, 

 Peiece. 



BREAD : ITie Theory and Science of its Production. By Prof. E. N. Horsfohd. 



THE FIRST PRINCIPLES OF THE EXACT SCIENCES EX- 

 PLAINED TO THE NON-MATHEMATICAL. By Prof. W. Kingdom 

 Clifford. (/« press,) 



THE PHYSICAL aEOORAPHT OF THE SEA. By W. B. Car- 

 penter, LL. D., F. R. S. 



THE BRAIN AND ITS FUNCTIONS. By J. Ldys, Physician to the 

 Hospice de la Salp6tri&re. With Illustrations. (In press,) 



THE BRAIN AS AN OBGrAN OF MIND. ByH. Charlton Bastian, 

 M. D., F. R. S. (/« press.) 



THE STARS. By the Rev. A. Secchi, late Director of the Observatory at Rome. 

 {In press.) 



GENERAL PHYSIOLOGY OF MUSCLES AND NERVES. By 



Prof, J. Rosenthal, of the University of Erlangen. 



THE HUMAN RACE. By Prof. A. de Quatrefages, Membre de I'lnstitut 



PS YCHOMETRY. By Francis Galton, F. R. S. 



THE LAWS OF VOLCANIC ACTION. By J. W. Judd, F. R. S. 



THE EMBRYONIC PHASES OF ANIMAL LIFE. By Prof. F. N. 

 Balfour. 



THE CRAYFISH: an Introduction to the Study of Zoology. By T. H. Hux- 

 ley, F.R.S. 



ANIMALS AND THEUl CONDITIONS OF EXISTENCE. By 



Dr. Carl Semper. 



ATOMS AND THE ATOMIC THEORY. By Prof. Wurtz. 



ANIMAL INTELLIGENCE. By George J. Romannes, F. L. S. 



A MANUAL OF CRYPTOGAMIC BOTANY. By Alfred W. Ben- 

 nett, F. L. S. 



ON ANTS AND BEES. By Sir John Lubbock, Bart., F. R. S. 



FORM AND HABIT IN FLOWERING PLANTS. By Prof W. T. 

 Thiselton Dyer, B. A., B. Sc. 



PROTOPLASM AND THE CELL THEORY. By Prof. Michael 

 Foster, M. D. 



EARTH-SCULPTURE: Hills, Valleys, Mountains, Plains, Rivers, Lakes; 

 how they were Produced, and how they have been Destroyed. Bv Prof. A. C 

 Ramsay, LL. D., F. R. S. , ■' / 



FORMS OF LIFE AND OTHER COSMICAL CONDITIONS By 



P. Bert, Professor of Physiology, Paris. 



D. APPLETON & CO., Publishers, 549 & 551 Broadway, New York. 



