3O A List of 



XXVI. The Human Species. By Professor A. de Quatrefages. Third 



Edition. Crown 8vo, 5.?. 



XXVII. Modern Chromatics. With Applications to Art and In- 

 dustry. By Ogden N. Rood. With 130 original Illustrations. 

 Second Edition. Crown 8vo, 5-r. 



XXVIII. The Crayfish : an Introduction to the Study of Zoology. By 

 Professor T. H. Huxley. With 82 Illustrations. Third Edition. 

 Crown 8vo, 5*. 



XXIX. The Brain as an Organ of Mind. By H. Charlton Bastian, 

 M.D. With numerous Illustrations. Third Edition. Crown 

 8vo, 5j. 



XXX. The Atomic Theory. By Prof. Wurtz. Translated by G. 



Cleminshaw, F.C.S. Third Edition. Crown 8 vo, 5*. 



XXXI. The Natural Conditions of Existence as they affect 

 Animal Life. By Karl Semper. With 2 Maps and 106 

 Woodcuts. Third Edition. Crown 8vo, 5*. 



XXXII. General Physiology of Muscles and Nerves. By Prof. 

 J. Rosenthal. Third Edition. With Illustrations. Crown 8vo, 

 5*- 



XXXIII. Sight : an Exposition of the Principles of Monocular and 

 Binocular Vision. By Joseph le Conte, LL.D. Second Edition. 

 With 132 Illustrations. Crown 8vo, 5-r. 



XXXIV. Illusions : a Psychological Study. By James Sully. Second 

 Edition. Crown 8vo, 5-r. 



XXXV. Volcanoes : what they are and what they teach. 

 By Professor J. W. Judd, F.R.S. With 92 Illustrations on 

 Wood. Second Edition. Crown 8vo, 5-r. 



XXXVI. Suicide : an Essay in Comparative Moral Statistics. By Prof. 

 E. Morselli. Second Edition. With Diagrams. Crown 8vo, $s. 



XXXVII. The Brain and its Functions. By J. Luys. With 

 Illustrations. Second Edition. Crown 8vo, 5-r. 



XXXVIII. Myth and Science : an Essay. By Tito Vignoli. Second 

 Edition. Crown 8vo, $s. 



XXXIX. The Sun. By Professor Young. With Illustrations. Second 

 Edition. Crown 8vo, 5^. 



XL. Ants, Bees, and "Wasps : a Record of Observations on the 

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

 M.P. With 5 Chromo-lithographic Illustrations. ^ Sixth Edition. 

 Crown 8vo, $s. 



XLI. Animal Intelligence. By G. J. Romanes, LL.D., F.R.S. 

 Third Edition. Crown 8vo, $s. 



