138 Scientific Intelligence. 
1800, 1850. 1860. 
Ratio Ratio Rati - 
Ibs. troy.|per_cent.|Ibs, troy | per ct- te: troy.|per ct- Ibs. troy. 
Russian Empire, 1,440} 2-7 65.600| 19°0 | 66,000) 11.3] 69,500 2 
Austrian Empire, 5,600} 1°6 *5'500 10} 5,500 
and rest of Eu- 3,500; 6° a. 
rope, 100|.... 350 315) 
Southern Asia, 10,000 | 18°5 25,000) 7°3 | 25,300 “43! 25,0 he 
Africa, 600} 1:2 4,000| 1-1 4.000 0-7} 4,000) ° 
Chilé, 7,500 | 13°8 
Bolivia, 1,600} 3-0 : 
Peru, 2,400| 44 ree 
New Granada, 12,600 | 23-4 *| 34,000] 9:9 | 34,000] 6:9} 34,000) BY 
Brazi 10,000 | 18°5 Z ‘i 
fexico, 300 1a 
California & neigh- a 
boring Stat States and }|_.....|..... 208,000| 60-2 '187,000} 31°9)210,000) 
erritori eee 
Rest of United St'tes, ee 2,950| 0-9 | 1,020} 0-2) 14) 9) 
Movapoos, ee Gime | ccukne wanm | mwooew ee iy. in 
British Cokauite, Sees ot ok ---- | 20,000) 3°4| 1100), 
RAM Seite “bee ccs _.-. |217,500] 37 0}156,00 « 
; Peeime os ksh 1 ~-a< | 26,000) 43) S108 
The portion of Mr. Phillips’s a devoted e pa offers pr 
ably more matter which is new to English rs than re ge 
ores which the experien' 
mines on the Comstock lode have evoked, ad b 
ested in such subjects, with satisfaction and instruction. 
* The yields of these several States varies considerably from year we 
the aggregate produce is believed to remain tolerably constant. 
