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Show 59 slickensided and possessing other features of a true fissure vein, it is undoubtedly not such. The material of the country- rock is granite. The mineral constituents are very irregularly distributed, both mica and feldspar often disappearing, leaving quartz and mica or quartz and feldspar only. The mica is often replaced by hornblende, forming a sj enite, and again the rock seems to be composed entirely of hornblende. At the water- level, 300 feet down, the ore is greatly decomposed, requiring only a pick and shovel to extract it. But at the lowest level, 700 feet, the quartz is very hard and at its richest quality. The ores are worked by the wet milling process. The supposed average yield is $ 30 per ton. Some ores, found in small quantities, have assayed as high as $ 00 per ton. The ore contains about' half as much silver as gold. The gold generally occurs in native condition. At the lowest level it is found in leaf state, and is readily seen with the naked eye. Some yellow sulphurets of iron and black sulphurets of arsenic and antimony are found, but these are not sufficient in quantity to be profitably utilized. The St. John Mine has been worked nearly ten years, in which time, by estimate, $ 80,000 has been expended and bullion to the amount of $ 200,000 has been extracted. It possesses a 12- stamp mill, each stamp weighing 750 pounds, and making 82 drops per minute. The amalgam is strained cold, through canvas bags, no pan amalgamation being carried on. The cost of a 10- stamp mill, including transportation from San Francisco and erection on the grounds, is about $ 4,500. Other expenses average as follows: Cost per ton of mining the ore, $ 4; reducing the same, $ 4; mining labor per diem, $ 2 and board; milling labor, $ 3 and board; running a tunnel on main vein, per foot, $ 8; sinking a shaft, $ 16; running a drift, $ 8. One man will stope or extract two tons of ore per diem. The neighboring country roads are good, but steep. The water used is obtained entirely from the mine, there being no large stream nearer than Kern River. Kelso Valley is well adapted for farming and grazing purposes, and upon this plain and in its vicinity there are, perhaps, 10,000 cattle. On the summit of Pah- Ute Mountain, about five miles distant, there is an unlimited quantity of heavy pine timber. The principal kinds of game are deer, grouse, and bear. JULIAN DISTRICT,. CALIFORNIA. Examined by George H. Birnie, April 19,1876. The Julian district is near the center of San Diego County, on the headwaters of San Dieguito Biver. It is 122 miles from Anaheim, by the old Government road from Wilmington to Fort Yuma. The Southern Pacific Railroad at Seven Palms, in the Ooahuila Valley, is nearer, but there is no practicable road to it. There is a mail stage tri- weekly to San Diego; distance, 65 miles; fare, $ 5. The post- office is Julian. The mountain- roads in the vicinity are very good. The first discovery in this district was made in 1870, by Messrs. Julian and Bailey. It was organized in the same year, since which time it has been worked continuously. The district is 6 miles long and 2 miles wide, following the summit- line of the Quiamaca Mountains, which have a notth- northeast trend. The direction of the lodes is north- north- east The dip is 45; the wall- rock is of granite and slate; the veins |