INTERNATIONAL SCIENTIFIC SERIES. 



VOLUMES IN PREPARATION. 



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



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

 Columbia College. 



ILLUSTRATIONS OF THE LOGIC OF SCIENCE. By Charles S. 

 Pkirce. 



BREAD : The Theory and Science of its Production. By Prof. E, N, HorsforD. 



THE FIRST PRINCIPLES OF THE EXACT SCIENCES EX- 



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

 Clifford. (In press. ) 



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

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



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

 Hospice de la Salpetriere. With Illustrations. (In press.) 



THE BRAIN AS AN ORGAN OF MIND. By H. Charlton Bastian, 

 M. D., F. R. S. (In 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 l'lnstitut. 



THE STEAM-ENGINE. By Prof. Thurston. With numerous Engravings. 



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 THEIR 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. By 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, N. Y. 



