Thomas H. Hnxley's Works. 



Science and Culture, and other Essays. I2mo. 



Cloth, price, $1.50. 



The Crayfish I An Introduction to the Study of Zoology. 

 With 82 Illustrations. (" International Scientific Series.") 

 12mo. Cloth, $1.75. 



Science Primers : Introductory. I8mo. Flexible Cloth, 

 45 cents. 



Man's Place in Nature. I2mo. Cloth, $1.25. 

 On the Origin of Species. I2mo. Cloth, $1.00. 



More Criticisms on Darwin, and Administrative 

 Nihilism. 12rno. Limp cloth, 50 cents. 



Manual of the Anatomy of Vertebrated Animals. 



Illustrated. 12mo. Cloth, $2.50. 



Manual of the Anatomy of Invertebrated Animals. 



12mo. $2.50. 



Lay Sermons, Addresses, and Reviews. I2mo. 



Cloth, $1.75. 

 Critiques and Addresses. I2mo. Cloth, $1.50. 



American Addresses ; with a Lecture on the Study of 

 Biology. 12mo. Cloth, $1.25. 



Physiography : An Introduction to the Study of Nature. 

 With Illustrations and Colored Plates. 12mo. Cloth, $2.50. 



Huxley and Youmans's Elements of Physiology 

 and Hygiene. By T. H. HUXLEY and W. J. YOUMANB, 



12mo. $1.50. 



For sale by all booksellers ; or sent by mail, post-paid, on receipt of 

 price. 



D. APPLETON & CO., Publishers, 



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