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 OEORQE L. GOOD A LB, JOHN TROWBRIDGE, W. Q. FARLOW and WM. JT DAVIS 

 of Cambridge ; Professors A. E. VERRILL, HENRY S. WILLIAMS and L. V. PIRSSON, of Nen 

 Haven; Professor O. F. BARKER, of Philadelphia; Professor JOSEPH S. AIMES, 

 of Baltimore; J1R. J. S. DILLER, of Washington. 



Two volumes annually, in monthly numbers of about 80 pages each. 



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. 

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



The American Journal of Science 

 New Haven, Conn. 



LAMARCK 



sa vie, son oeuvre 

 par MARCEL LANDRIEU. 



1 vol. gr. in 8° raisin <f environ 550 p. avecun portrait en 



Serapu^lie - dans^S'lEoIres d'e la Soci&e Zoolo- 



10 fr. Le tirage e"tant tres linute, priere de sous- 

 crire imm&Iiatement en s'adressant au Secretaire 



8 ° 28 RUE SERPENTE, PARIS. 



To Zoologists and fluseums 



57 Haversto 



Holds the largest stock in the world of 

 specimens in all branches of Zoology. 



Just published, my new price list of 

 BIRD'S EGGS, containing over 800 spe- 

 cies from all parts of the world. Also 

 price lists Kos. 6, Bird Skins (over 4,300 

 species), and 7, Mammal Skins, Skeletons, 

 and Spirit Specimens (over 300 species). 



Any of the above price lists sent post-free 

 on application. 



Science 



1, establisl 



and notes on the progrc 



The Popular Science Monthly 



An illustrated magazine, established in 1872, devoted 

 to the diffusion of science, publishing articles by 

 leadine authorities in all departments «f wu» aad 

 applied science, including the applications of science 



The American Naturalist 



monthly journal, established i 



A monthly jou: 

 to the biological 8C 

 factors of organic e 



special reference to the 



