IMPOETANT AND VALUABLE BOOKS 



ON SCIENTIFIC SUBJECTS. 



The Geographical Distribution of Animals. With a 

 Study of the Relations of Living and Extinct Faunas, as 

 elucidating the Past Changes of the Earth's Surface. By 

 Alfred Kussel Wallace. With Colored Maps and 

 numerous Illustrations. 2 vols., Cloth, $10 00. 



The Earth. By Elisee Reclus. With 234 Maps and Il- 

 lustrations, and 23 Page Maps printed in Colors. 8vo, 

 Cloth, $5 00 ; Half Caff, $7 25. 



The Ocean, Atmosphere, and Life. By Elisee Reclus. 

 AVith 250 Maps or Fifrures, and 27 Maps printed in 

 Colors. 8vo, Cloth, $6 00; Half Calf, $8 25. 



The Atmosphere. Translated from the French of Camille 

 Flammarion. With 10 Chromo - lithographs, and 86 

 Wood-cuts. Royal 8vo, Cloth, $6 00 ; Half Calf, $8 25. 



Cosmos: a Sketch of a Physical Description of the Uni- 

 verse. By Alexander Von Humboldt. Translated from 

 the German by E. C. Otte. 2 vols., 12mo, Cloth, $3 00. 



Geological History : Chapters from the Physical History 

 of the Earth. By Arthur Nicols, F.G.S., F.R.G.S. 12rao, 

 Cloth, $1 75. 



A Naturalist's Wanderings in the Eastern Archi- 

 pelago. A Narrative of Travel and Exploration from 

 1878 to 1883. By Henry O. Forbes, F.R.G.S., etc. 

 Many Illustrations and Colored Maps. 8vo, Cloth, $5 00. 



The Voyage of the "Challenger." The Atlantic: A 

 Preliminary Account of the General Results of the Explor- 

 ing Voyage of H M.S. "Challenger" during the Year 

 1873 and the Early Part of the Year 1876. By Sir C. 

 Wyville Thomson, Knt., LL.D., F.R.S.,etc. With many 

 Colored Maps, Charts, and Illustrations. 2 vols., 8vo, 

 Cloth, $12 00. 



Published by HARPER & BROTHERS, New York. 



Hers, or ?p? 

 States, Ca 



The above works are for sale by all booksellers, or will be sent by the publisher, 

 postage prepaid^ to any part of the United States, Canada, or Mexico, on receipt 

 of price. 



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