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 RUSSEL 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 Calf, $7 25. 



THE OCEAN, ATMOSPHERE, AND LIFE. By ELISEE RECLUS. 

 AVith 250 Maps or Figures, 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. 12mo, 

 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 II 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. 



The above works are for sate, by all bookseller*, or will be sent by the publisher, 

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

 of price. 



