The International Scientific *Senes— ((.'ontinued.) 



85. VOLCANOES: What they Are and what they Teach. By John W. Judd, 

 F.R. S., Professor of Geology in the Royal School of Mines. With 96 Il- 

 lustrations, $2.00. 



b6. SUICIDE: An Essay in Comparative Moral Statistics. By Henrt Mor- 

 sELLi, M.D., Professor of Psychological Medicine, Royal University, 

 Turin. $1.75. 



37. THE FORMATION OP VEGETABLE MOULD, THROUGH THE AC- 

 TION OF WORMS. With Observations on their Habits. By Charles 

 Darwin, LL. D., F. R. S. With Illustrations. $1.50. 



88. THE CONCEPTS AND THEORIES OF MODERN PHYSICS. By J. B. 

 Stallo. $1.75. 



39. THE BRAIN AND ITS FUNCTIONS. By J. Ldts. $1.50. 



40. MYTH AND SCIENCE. By Tito Vignoli. $1.50. 



41. DISEASES OP MEMORY: An Essay in the Positive Psychology. By Th. 



RiBOT, author of " Heredity." $1.50. 



42. ANTS, BEES, AND WASPS. A Record of Observations of the Habits of 



the Social Hymenoptera. By Sir John Lubbock, Bart., F. R. S., D. C. L., 

 LL. D., etc. $2.00. 



43. SCIENCE OF POLITICS. By Sheldon Amos. $1.75. 



44. ANIMAL INTELLIGENCE. By Geobge J. Romanes. $1.75. 



45. MAN BEFORE METALS. By N. Jolt, Correppondent of the Institute. 



With 148 Illustrations. $1.75. 



46. THE ORGANS OF SPEEPH AND THEIR APPLICATION IN THE 



FORMATION OP ARTICULATE SOUNDS. By G. H. von Meter, Pro- 

 fe^^sor in Ordinary of Anatomy at the University of Ziirich. With 47 

 Woodcuts. $1.75. 



47. FALLACIES: A View of Logic from the Practical Side. By Alfred 



SiDGWiCK, B. A., Oxon. $1.75. 



48. ORIGIN OP CULTIVATED PLANTS. By Alphonse de Candolle. $2.00. 



49. JELLY-FISH, STAR-FISH, AND SEA-URCHINS. Being a Research on 



Primitive Nervous Systems. By George J. Romanes. $1.75. 



50. THE COMMON SENSE OP THE EXACT SCIENCES. By the late Will- 



iam KiNGDON Clifford. $1.50. 



51. PHYSICAL EXPRESSION: Its Modes and Principles. By Francis War- 



ner, M. D., Assistant Physician, and Lecturer on Botany to the London 

 Hospital, etc. With 51 Illustrations. $1.75. 



52. ANTHROPOID APES. By Robert Hartmann, Professor in the University 



of Berlin. With 63 Hlustrations. $1.75. 



New York : D. APPLETON & CO., 1, 3, & 5 Bond Street. 



