PHYSICAL SCIENCE. 27 



Huxley (Professor). 



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 Content- 

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

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

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

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

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

 mental, and social science is universally acknoivledgcd ; his works 

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

 modern thought. 



ESSAYS SELECTED FROM LAY SERMONS, ADDRESSES 

 AND REVIEWS. Crown 8vo. u. 



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



LESSONS IN ELEMENTARY PHYSIOLOGY. With numerous 

 Illustrations. Sixth Edition. i8mo. cloth. 4^. 6d. 



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

 principles of Human Physiology, or the Structure and Functions 

 of th* Human Body. The first lesson supplies a general vir<.u of 

 the subject. This is follo%ued by sections on the Vascular or Venous 

 System, and the Circulation ; the Blood and the Lymph ; Respira 

 tion ; Sources of Loss and of Gain to the Blood ; the Function of 

 Alimentation ; Motion and Locomotion ; Sensations and Sensory 

 Organs ; the Organ of Sight ; the Coalescence of Sensations ivith 

 one another and with other States of Consciousness ; the Nervous 

 System and Innervation ; Histology, or the Minute Structure of 

 the Tissues. A Table of Anatomical and Physiological Constants 

 is appended. The lessons are fully illustrated by numerous en 

 gravings. The new edition has been thoroughly revised, and a con 

 siderable number of new illuslrations added: several of these have 

 been taken from the Rabbit, the Sheep, the Dog, and the Frog, in order 

 to aid those who attempt to make their knowledge real, by acquiring 

 some practical acquaintance with the facts of Anatomy and Physi 

 ology. "Pure gold throughout." Guardian. " Unquestionably 

 the clearest and most complete elementary treatise on this subject 

 that we possess in any language." Westminster Review. 



