The American Journal of Science 



Established by Benjamin Silliman in 1818. 



The Leading Scientific Journal in the United States 



Devoted to the Physical and Natural Sciences, with special reference to 

 Physics, and Chemistry on the one hand, and to Geology and Mineralogy 

 on the other. 



Editor: EDWARD S. DANA. 



Associate Editors: Professor GEORGE L. OOODALE, JOHN TROWBRIDGE, W. G. FARLOW and WM. n. DAVIS 

 of Cambridge ; Professors A. E. VERRILL, HENRY S. WILLIAMS ai 

 Haven; Professor G. F. BARKER, of Philadelphh 

 of Baltimore; C1R. J. S. DILLER, 



Two volumes annually, in monthly numbers of about I 



This Journal ended its first series of 50 volumes as a quarterly in 1845 ; its second 

 series of 50 volumes as a two-monthly in 1870 ; its third series as a monthly ended Dec- 

 ember, 1895. A Fourth Series commenced in 1896. 



Subscription price, $6 per year or 50 cents a number, postage prepaid in the United States ; 

 $6.25 to Canada; $6.40 to countries in the Postal Union. Back numbers at reduced prices. 



Ten- volume Indexes, Vols. I-X, XI-XX, fourth series, price one dollar. Address 



The American Journal of Science 

 New Haven, Conn. 



Pour para ire en 1908. 



LAMARCK 



sa vie, son oeuvre 

 par MARCEL LANDRIEU. 



•ance et mis en yente ^galement au prix de 

 ; tirage £tant tres limite, priere de sous- 

 fdiatement en s'adressant au Secretaire 



28 RUE SERPENTE, PARIS. 



Science 



To Zoologists and Huseums 

 W. F. H Rosenberg 



Importer of Exotic Zoological Specimens 

 57 Haverstock Hill London, N. W. England 



Holds the largest stock in the world of 

 specimens in all branches of Zoology. 



Just published, my new price list of 

 BIRD'S EGGS, nontainin- >v,-r -•<•«• 

 cies from all parts of the world. Also 

 pric- Ii.tr Nos. 6, Bird ^kin- -v- r ;.:,<«■ 

 species), and 7, Mammal Skins, Skeletons, 

 and Spirit Specimens (over 300 species). 



Any of the above price lists sent post-free 

 on application. 



1883, devoted to 



The Popular Science Monthly 



The American Naturalist 



THE SCIENCE PRESS 



