The International Scientific Series — continuetl. 



XXXIII. SIGHT: an Exposition of the Principks of Monocular and 



Binocular Vision. By Joseph Ls CoNTE, LL.D. Second Edition. With 

 132 Illustrations. 



XXXIV. ILLUSIONS; a Psychological Study. By James Sully. 



Third Edition. 



XXXV. VOLCANOES : what they are and what they teach. By 



John W. Judd, F.R.S. Fourth Edition. With 96 Illustrations. 



XXXVI. SUICIDE : an Essay on Comparative Moral Statistics. 



By Professor H. Morselli. Second Edition. 



XXXVII. THE BRAIN AND ITS FUNCTIONS. By J. Luys, 



Physician to the Hospice de la Salpetri^re. With numerous Illus- 

 trations. Thii-d Edition. 



XXXVIII. MYTH AND SCIENCE : an Essay. By Tito Vignoli. 

 Third Edition. 



XXXIX. THE SUN. By C. A. Young, Ph.D., LL.D. Fourth Edition. 

 With numerous Illustrations. 



XL. ANTS, BEES, and "WASPS. A Record of Observations 

 on the Habits of the Social Hymenoptera. By Sir John Lubbock, 

 Bart., M.P, Tenth Edition. With 5 Chromo-lithographic Plates. 



XLI. ANIMAL INTELLIGENCE. By aEOROE J. Romanes, 

 LL.D., F.R.S. Fifth Edition. 



XLII. The CONCEPTS and THEORIES of MODERN 

 PHYSICS. By J. B. Stallo. Third Edition. 



XLIII. DISEASES of MEMORY. An Essay in the Positive 

 Psychology. By Th. Ribot. Third Edition. 



XLIV. MAN BEFORE METALS. By N. Jolt, Correspondent 

 de rinstitut de France. Fifth Edition. With 148 Illustrations. 



XLV. THE SCIENCE of POLITICS. By Prof. Sheldon 



Amos. Third Edition. 



XLVI. ELEMENTARY METEOROLOGY. By Robert H. 



ticorr. Fifth Edition. 



XLVII. THE ORGANS of SPEECH. By Georg Hermann 

 von Meyer. With 47 Illustrations. 



XL VIII. FALLACIES: a View of Logic from the Practical Side. 

 By AI.FRED SiDGWiCK. Second Edition. 



XLIX. THE ORIGIN OF CULTIVATED PLANTS. By 



Alphonse Db Oandolle. Second Edition. 



L. JELLY PISH, STAR FISH, AND SEA URCHINS. 



Being a Research on Primitive Nervous Systems. By G. J. Romanes, 

 LL.D., F.R.S. Second Edition. 



LI. THE COMMON SENSE OP THE EXACT 



SCIENCES. By the lateWiLLU.M KiNGDON UUFFORD. Third Edition, 

 With 100 Figures. 



London : KEGAN PAUL, TRENCH, TRUBNER, & CO., Ltd. 



