The International Scientific Series.— (Continued.) 



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



Stallo. 81.75. 



39. THE BRAIN AND ITS FUNCTIONS. By J. Luys, Hospice Salpetriere, 



Paris. With 6 Illustrations. $1.50. 



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



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



Rlbot, 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., etc. $2.00. 



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



44. ANIMAL INTELLIGENCE. By George J. Romanes. M. D., F. R. S. $1.75. 



45. MAN BEFORE METALS. By Professor N. Jolt, Science Faculty of Tou- 



louse. With 148 Illustrations. $1.75. 



46. THE ORGANS OF SPEECH AND THEIR APPLICATION IN THE 



FORMATION OF ARTICULATE SOUNDS. By Professor G. H. von 

 Meyer, University of Zurich. With 47 Illustrations. $1.75. 



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



Sidgwick, B. A., Oxon. $1.75. 



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



49. JELLY-FISH, STAR-FISH, AND SEA-URCHIXS. A Research on Primi- 



tive Nervous Systems. By George J. Romanes, M. D., F. R. S. With 63 

 Illustrations. $1.75. 



50. THE COMMON SENSE OF THE EXACT SCIENCES. By William Klng- 



don Clifford. With 100 Figures. $1.50. 



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



ner, M.D., Assistant Physician, London Hospital. With 51 Hlustrations. 

 $1.75. 



52. ANTHROPOID APES. By Professor Robert Hartmann, University of 



Berlin. With 63 Illustrations. $1.75. 



53. THE MAMMALL\ IN THEIR RELATION TO PRIMEVAL TIMES. By 



Professor Oscar Schmidt, L T niversity of Strasburg. With 51 Hlustrations. 

 $1.50. 



54. COMPARATIVE LITERATURE. By Professor H. M. Posnett, M. A., Uni- 



versity College, Auckland. $1.75. 



55. EARTHQUAKES AND OTHER EARTH MOVEMENTS. By Prof essor John 



Milne, Imperial College of Engineering, Tokio. With 38 Figures. $1.75. 



56. MICROBES, FERMENTS, AND MOULDS. By E. L. Trouessart. With 



107 Elustrations. $1.50. 



57. THE GEOGRAPHICAL AND GEOLOGICAL DISTRIBUTION OF ANI- 



MALS. By Professor Angelo Heilprin, Academy of Natural Sciences, 

 Philadelphia. $2.00. 



58. WEATHER. A Popular Exposition of the Nature of Weather Changes from 



Day to Day. With 96 Diagrams. By Hon. Ralph Abercromby. $1.75. 



