110 



KANSAS CITY REVIEW OF SCIENCE. 



growing West. In Denver we behold the Queen City of the mountains and the 

 plains. For five hundred miles north, south, and west, the continent pays con- 

 stant tribute. Twelve lines of railway, which are still stretching out their iron 

 arms to encircle new possessions, carry in and out the moving multitudes and 

 distribute the contents of her warehouses and the products of her shops. She is 

 without a rival, and envy has been silenced in her presence. * * * — 

 La Plata Miner. 



ANALYSIS OF LEADVILLE ORES. 



BY D. BAUMAN. 



As a fair average of Leadville ores I give the analysis of lots stored at our 

 smelters, from all divisions of the camp : 



LOTS NO. 



I 



2 



3 

 4 



5 

 6 



7 

 8 



9 



ID 

 II 



12 



13 

 14 



15 

 16 



17 

 18 



19 

 20 

 21 

 22 



23 

 24 



25 

 26 

 27 

 28 

 29 

 30 



TONS. 



300 

 200 



5 



ID 



20 



3 



5 



5 



400 



550 

 400 



50 



10 



200 



300 



200 



260 



10 



50 



3 



30 



30 



15 



24 



50 

 13 

 7 

 35 

 30 

 50 



SILVER. 

 OZS. PER TON. 



35 



35 

 300 

 100 



35 



140 



200 



80 



75 



85 



100 



55 

 45 

 80 

 48 

 48 



75 

 800 



80 

 2,000 



10 



20 

 520 



68 



57 

 153 

 424 

 140 

 104 



63 



LEAD. 

 PER CENT. 



35 

 40 

 18 



7 

 10 



6 



2 

 44 

 35 

 44 

 22 

 27 

 28 



30 

 18 

 22 

 42^ 

 2 

 16 



3 

 29J 



61^ 

 6 



33 

 46 

 18 



54 

 42 



SILICA. 

 PER CENT. 



15 

 12 

 I I 

 12 



30 

 62 



50 

 12 



41 



30 



24 



45 

 18 



22 



30 

 163^' 



14^ 



18 



65 

 20 



4 



40 

 12 



25 

 30 



ID 

 16 

 10 



50 



MET. IRON. 

 PER CENT. 



18 



23 

 18 



20 

 20 



4 



2 



5 



5 



28 



10 



30 

 16 

 24 

 28 

 15 

 5 

 10 



4 

 18 



5 

 10 



15 



8 



40 



15 



2 



16 



7 



