The International Scientiflc S«ri«s— (Continued.) 



S5. VOLCANOES : What they Are and what they Teach. By Johh W. JncD, 

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36. SUICIDE: An Essay in Comparative Moral Statistics. By Henry Mok- 



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



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

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



Stat.t.o. $1.75. 



.39. THE BRAIN AND ITS FUNCTIONS. By J. LuTS. $1.60. 



40. MYTH AND SCIENCE. By TtTO Visnoli. $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 



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43. SCIENCE OP POLITICS. By Sheldon Amos. $1.;5. 



44. ANIMAL INTELLIGENCE. By Geobge J. Romanes. $1.T5. 



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



With 148 Illustrations. $1.75. 



46. THE ORGANS OP SPEECH AND THKIR APPLICATION IN THE 



FORMATION OF ARTICULATE SOUNDS. By G. H. voN Meteb, Pro- 

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



SiDQWicK, B. A., Oxon. $1.75. 



48. ORIGIN OF CULTIVATED PLANTS. By Alphonbe de Candolle. $2.00. 



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



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

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



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

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



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New York : D. APPLETON & CO., 1, 8, & 5 Bonrl Street. 



