Kegan Paul, Trench & Co.'s Publications. 31 



XXIV. A History of the Gro^wth of the Steam Engine. By 



Professor R. H. Thurston. With numerous Illustrations. Fourth 

 Edition. 5^. 



XXV. Education as a Science. By Alexander Bain, LL.D. Sixth 



Edition. 5^. 



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



Edition, ^s. 



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

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

 Second Edition. 5^. 



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

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



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

 M.D. With numerous Illustrations. Third Edition. 5i-. 



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



Cleminshaw, F.C.S. Fifth Edition, ^s. 



XXXI. The Natural Conditions of Existence as they affect 

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

 Woodcuts. Third Edition. 5^. 



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

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

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

 With 132 Illustrations. 5^. 



XXXIV. Illusions : a Psychological Study. By James Sully, Third 

 Edition. 5.5-. 



XXXV. Volcanoes : what they are and vv^hat they teach. 

 By Professor J. W. Judd, F.R.S. With 96 Illustrations on 

 Wood. Fourth Edition. 5^-. 



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

 II. Morselli. Second Edition. With Diagrams. 5^-, 



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

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

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

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

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

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