THOMAS H. HUXLEY'S WORKS. 



The Crayfish : An Introduction to the Study of Zoology. 

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

 12mo. Cloth, price, $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, $i.oo. 

 More Criticisms on Darwin, and Administrative 



Nihilism. 12rao. 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. l2mo. 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. II. Huxley and W. J. Youmans. 

 12mo. $1.50. 



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

 price. 



D. APPLETON & CO., Publishers, 



1, 3, & 5 Bond Street, New York. 



