Capt. Koschkull on the Caucasus. 221 
present time, produced about 1600 kilograms of silver, and 
1,600,000 kilograms of lead. In the Little Caucasus there 
are veins of argentiferous galena, which were worked in an- 
cient times by the Greeks of Asia Minor, who were able not 
only to obtain the lead, but also to separate the silver from it. 
Since the commencement of the present century, these mines 
have been entirely abandoned by the Greeks, probably from the 
impossibility of following the veins to great depths, with their 
imperfect system of mining. 
opper is also found in the Great Caucasus, but in much 
the larger quantity in the mountains of the Little Caucasus. 
For the most part, the ores of copper found there are sulphids 
which occur in veins in erupted masses of diorite. Copper 
has been mined on the Caucasus from the remotest antiquity. 
The process employed, both of mining and heating the ores, 
were of the simplest character, and such as belong to the 
Infancy of the art. The productions of the copper-bearin 
districts is doubtless due to the richness and abundance of the 
[To be continued.] 
