PHYSICAL SCIENCE. 27 



Huxley (Professor) — continued. 



the Natural History Sciences: — (6) On the Study of Zoology: — 

 (7) On the Physical Basis of Life: — (8) The Scientific Aspects oj 

 Positivism: — (9) On a Piece of Chalk: — (10) Geological Contem- 

 poraneity and Persistent Types of Life : — ( 1 1 ) Geological Reform : — 

 (12) The Origin of Species: — (13) Criticisms on the "Origin oj 

 Species:'''' — (14) On Descartes' "Discourse touching the Method cf 

 using One's Reason rightly and of seeking Scientific Truth." Tht 

 momentous influence exercised by Mr. Huxley 's writings on physical, 

 mental, and social science is universally acknowledged : his works 

 must be studied by all who would comprehend the various drifts of 

 modern thought. 



ESSAYS SELECTED FROM LAY SERMONS, ADDRESSES, 

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This volume includes Numbers 1, 3, 4, 7, 8, and 14, of the above. 



LESSONS IN ELEMENTARY PHYSIOLOGY. With numerous 

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This book describes and explains, in a series of graduated lessons, the 

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 one another and with other States of Consciousness ; the Nervous 

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 the Tissues. A Table of Anatomical and Physiological Constants 

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