SUBJECT INDEX 



269 



Rhodium. 



1804: 9 Fourcroy 

 1804: 10 Fourcroy 



Ruthenium (I), 

 Pluranium. 



1826: 5 Osann 



1829: 6 Osann 



1845: 5 Claus 



1845: 6 Osann 



1845: 7 Osann 



1845: 8 Claus 



1845: 9 Fremy 



Ruthenium. 



1844: 4 Claus 



1844: 5 Claus 



1845: 5 Claus 



1845: 6 Osann 



1845: 7 Osann 



1845: 8 Claus 



1845: 9 Fremy 



Unnamed (California). 

 1852: 3 Genth 



Unnamed (Oregon). 

 1862: 2 Chandler 



Davyum. 



1877: 3 Kern 

 1877: 4 Allen 



Uralium. 

 ' 1879: 3 Guyard 



Unnamed (Eussia). 

 1883: 2 Wilm 



4. OCCUERENCE. 



1806: 2 Bucholz 



1823: 1 C. C. 



1826: 3 Menge 



1827: 5 Humboldt 



1828: 5 



1842: 5 • 



1847: 5 Pettenkofer 



1854: 3 



1870: 37 Skey 



1877: 1 



1879: 2 Jeremejew 



1880: 2 Newberry 



1890: 1 Blomeke 



In South America. 

 1748: 1 Ulloa 

 1751: 1 Watson 



Polinium and 



In Mexico. 

 1811: 2 Humboldt 

 1874: 1 Burkart 

 1875: 4 Sandberger 

 1876: 3 Uslar 



In United States. 

 1850: 3 Patterson 



California. 

 1849: 2 



1850: 4 Teschemacher 



1852: 2 Genth 



1859: 3 Weil 



1862: 1 Ludwig 



1879: 1 Luthy 



Oregon. 



1854: 1 Blake 



New York. 



1881: 2 Collier 



Pennsylvania. 

 1851: 2 Genth 



North Carolina. 

 1847: 4 Shepard 

 1881: 1 Hidden 

 1892: 1 Venable 



Missouri. 



1859: 2 ■ 



