Mineralogy and Geology. 139 
reserve we another notice what we have to say on this branch of 
the subject 
tury, and for the years 1850 and 1865. In cases where the returns 
for the year indicated could not be obtained, the produce for the 
America and South America, must be regarded as estimates only, 
A large proportion of the precious tens produced in these coun- 
tries is annually exported without ing through the hands of 
government officers, and consequently ay most reliable information 
that can be procured is but little to ne i apes on. 2» sys- 
tematic investigations have been made co by competent 
persons, since the date of the writings of 1 Sineart and Chevali er. 
Table showing the approximate yield of the principal silver-producing countries. 
1800. 1850. 1865, 
woe or, | ee | wor, | BS, | to. | 
Russian Empire, 58,150| 26 | 60,000} 91 | 68,000 1 
Scandinavi 20,4001 0-7 | 15,000) 0-4 
Great Britain, 48,500} 1-7 | 60,500) 1-5 
31,500} 11 | 28,000) 0-6 
Prussia, 21,200; 0-7 | 68,000; 1-7 
ony, 63,600, 2-2! 80,000} 2-0 
Other German States, 141,000} 6-0 2,500) 0-1 2,500 
Austria, 87,000) 3:1 | 92,000; 22 
, 5,000/ 0-2 | 18,000) 0-4 
- a Rs RES | ertues: eae Semone _.. | * 25,000) 0-6 
i 125,000 44 | 110,000, 28 
ustralia, New Zealand, 
British Columbia, Nova }|....---- _--- | 10,000} 04 9,500) 02 
Scotia, 
Chili, 18,300| 0-8! 238,000) 8-4} 299,000) 73 
Bolivia, -271,300/ 11-6 | 130,000! 4-6 | 136,000, 33 
401,850} 17-2 | 303,150, 10-7 | 299,000, 74 
New Granada, 5,000} 02] 18,000) 05) 15,000) 0-4 
1,200]... 615} ...| 1,500] 0-4 
Mexico, 1,440,500} 61-7 |1,650,000| 68-4 {1,700,000} 42°3 
United States, a _1...| 2... | 17,400! 0-7 {1,000,000 25-0 
Total, 2,337,300) 100 |2,827,425| 100 |4,017,000t 100 
We Eero close this notice without thanking Mr. Phillips for the 
very able manner in which he has s performed the task he has under- 
a ee much i . 
of which } bis treat: “The bodkew beautifully printed ro i place 
y regret being that these very excellencies shou BR 
beyond the reach of a large class of readers. 
* Obtained from the island of Sardinia, where it is found associated with se 
