report of this office, folio 227, to which the reader is referred. The plications of the vein are unlike anything I have ever seen or read of.

The engraving conveys a good idea of one of these folds as seen at the end of the upper tunnel. The slates are highly aluminous. In the tunnels the sides are soon coated with an incrustation of alum.

The ore in the Ready Relief Mine is blue ribbon quartz, much resembling that of the Sheep Ranch Mine in Calaveras County. The gold is free. The sulphurets are concentrated and saved, but I have no information as to their value. Some of the clay slate contains gold; it resembles the ores of the Black Hills in Dakota, and those of the old Oso Mine in Mariposa County. These slates should be thoroughly prospected and cross-cuts made from both sides of the vein. It might be found that they would pay to crush in large water-power mills with economical management. The general direction of the vein is south southeast. The dip is at almost any angle, owing to the folds before mentioned.

In 1874, the mine was opened by three tunnels, one two hundred feet, the others one hundred and fifty feet each; at the end of the upper tunnel there was a shaft to the surface, one hundred and ten feet above. The mine at present is worked by an upper tunnel of five hundred feet, and a

shorter one sixty feet below, through which ores are conveyed to the mill. Owing to the uprise shaft, the ventilation in the mine is perfect.

The mill is in rather a dilapidated condition, but is still doing good work. It consists of two batteries of five stamps, and driven by steam. The stamps weigh about seven hundred pounds. Each battery is supplied with an automatic ore feeder. Below the aprons there are three Hendy's concentrators, which save a considerable quantity of sulphurets. The mill is only run ten hours per day, during which seven tons of ore are crushed. Wood costs $1 50 per cord for cutting, and $2 for hauling to the mill. The mill is forty feet below the lower tunnel, from which the ores are carried in chutes. The dump of the mine, in which the rejected vein matter is piled, contains some good ores, and I am of the opinion that it would all pay in a large, economical mill. A great deal of low grade ore could be obtained from the hill alongside of the vein. An inexpensive experiment would reveal the value of this ore, and decide if it could be made to pay or otherwise.

In 1876 one hundred tons of ore yielded $30 per ton. The present average yield is not stated, but is admitted to be satisfactory. It is claimed that the output to the present time exceeds $350,000. The gold is worth $14 50 per ounce.

Mr. Charles J. Sauer thinks the water in the south fork of San Felipe River runs twelve miners' inches in summer, and much more in winter. I visited, with Mr. Bailey, a spring which gushes from the hillside at an elevation of five hundred feet above the mill. At the time of my visit, in May, the quantity flowing was at least thirty inches, and Mr. Bailey informed me that the flow was nearly the same all the year round. With the great altitude, this water would afford power sufficient to run extensive reduction works.

The Oriflamme Mine is situated in what was formerly the Desert Mining District, now incorporated in Julian. It belongs to a Boston Company, "The San Diego Development Company." Their ten-stamp mill has recently made a run which Mr. Henry M. Dow, the Superintendent, informed me yielded from $4 to $10 per ton. Water and wood are scarce, and mining and milling are conducted under difficulties. From this mine the Great Colorado Desert may be seen for many miles to the eastward. The sight is a very grand and interesting one.

The STONEWALL MINE, formerly the Stonewall Jackson, is situated in the northern part of the Cuyamaca Grant about seven miles distant from Julian District in a direct line. By road it is considerably further. If the United States section lines were run out, it would lie in section four, township fourteen south, and range four east. It is not in the Julian District, as may be seen by referring to the map published with this. It has the reputation of being the largest vein in the mining region about Julian City. I regret that for want of time I could not visit this mine.

Dr. J. E.

In 1870 the Stonewall was reported to be twenty feet wide. Fulton, one of the present owners, informed me that the width varied from six to forty feet. The country rock is said to be like that of Julian District-a mica schist with coarse granite. The ores are now being crushed in a steam-driven mill of ten stamps. I am informed that the mine has produced in nine months $85,000. The last clean-up yielded $40 per ton. The United States Mint has bought gold from this mine for $18 per ounce. The mine is opened by a vertical shaft one hundred and fifty-five feet deep, from which levels are driven. The lay of the country is such that there is no way to drain the mine by adit. Water for milling and for the steam

boiler is brought in iron pipes a mile or more, from the mountains. In 1871 the mine had a shaft one hundred feet deep, and a level at sixty feet running one hundred and eighty feet to the north and one hundred feet to the south. Stoping had not then commenced.

This promising mine has always been worked under difficulties. In 1871, the small mill then in operation could only run five hours each day for want of water. At that time the mine is said to have yielded from $12 to $20 per ton. During my stay in San Diego County I heard the mine invariably well spoken of.

CALIFORNIA MINERALS.

Mineral species known at the present time to exist in the State of California, carefully revised and corrected and brought up to date, intended to be a check list and foundation for future work. All technical or scientific descriptions have been omitted except in case of minerals not mentioned in former reports, or where some special work has been done, or some interesting feature discovered or noticed. The list has been arranged alphabetically for convenience of reference.

1. AGALMATOLITE. Minerals resembling agalmatolite occur in San Luis Obispo County, and at Greenwood, El Dorado County, the latter in a vein or stratum from six inches to a foot in thickness.

AGATE-See Quartz.

ALABASTER-See Gypsum.

2. ALBITE. Soda feldspar, a specimen in which quartz crystals are imbedded, was found in the San Lucas Mine, Inyo County. It is now in the private cabinet of Dr. Gould at San Diego. Dana gives as a locality the vicinity of the Murchie Mine in Nevada County, with gold and pyrite. The abundance of soda in the desert soils in California would indicate albite in the crystalline rocks.

3. ALTAITE. Telluride of lead, said to exist in Rawhide Ranch Gold Mine, Tuolumne County; in the Frenchwood Mine, Robinson's Ferry, Calaveras County, with petzete, calaverite, and other tellurium minerals; also in the Morgan Mine, Carson Hill, Calaveras County, in large masses, with free gold; at the Adelaide Mine and the Golden Rule Mine, in Tuolumne County, and elsewhere in the State.

4. ALUM. Occurs in mineral waters; as an incrustation, ten miles north of Santa Rosa, Sonoma County; near Newhall, Los Angeles County; near Auburn, Placer County; in thick incrustations at the Sulphur Bank Quicksilver Mines, Lake County; said to occur at Silver Mountain, Alpine County; at Howell's Mountain, Napa County; at the mud volcanoes, San Diego County, and at numerous locations, as an incrustation on rocks; I have noticed it on the bedrock laid bare by hydraulic streams, near Dutch Flat, Placer County, in a crystalline state.

AMIANTHUS see Amphibole.

5. AMPHIBOLE. Actinolite, anthophyllite, amianthus, asbestus, hornblende, mountain cork, mountain leather, tremolite, etc.

ACTINOLITE. Abundant in counties bordering on the Bay of San Francisco; found in bowlders, or rolled masses, in Alameda and Contra Costa Counties, which show, when broken, beautiful green radiating crystals; found in rocks of the Coast Range; near Knight's Ferry, Stanislaus County; at Petaluma, Sonoma County, with garnets; on the Mariposa estate, Mariposa County, in fine needle crystals; in Quartz Eagle Gulch, Plumas County; twelve miles from Gilroy, Santa Clara County; Eureka, Humboldt County; Santa Rosa, Sonoma County; Reed's Ranch, Marin County; and in the Lone Mountain Cemetery, San Francisco.

ANTHOPHYLLITE has been found in Slate Range, San Bernardino County. ASBESTUS

Butte County. Eighteen miles south of Oroville.

Calaveras County. Salt Spring Valley and Jenny Lind Hill.

Del Norte County. Exact locality not stated.

Fresno County. French Gulch, Potter Ridge Mining District, near Fresno Flat; Fine Gold Gulch.

Inyo County. Numerous localities in the Inyo Mountains.

Los Angeles County. Near Newhall.

Mariposa County. Mount Bullion and Bear Valley.

Placer County. Swiss Boy and Leed's claims, one mile below Rice's bridge.

San Diego County. Seven miles east of Elsinore, section six, township five south, range three west, S. B. M. This deposit is now being worked and boiler covering, etc., manufactured at Elsinore.

Shasta County. Exact locality unknown.

Tulare County. White River.

Yolo County. California Mine.
HORNBLENDE—

Calaveras County. At Vallecito.

Contra Costa County. At San Pablo.

Monterey County. At Soledad.

Sacramento County. At Folsom.

Sonoma County. At Healdsburgh, and as a constituent of rocks in numerous localities in the State.

MOUNTAIN CORK has been found in Butte County, at Red Hill, and in Tuolumne County.

MOUNTAIN LEATHER. Amador County, in Little Grass Valley Mine, Pine Grove District, and in Mariposa and Tuolumne Counties.

TREMOLITE. Found white and fibrous in limestone at Columbia, Tuolumne County, and in Santa Cruz Mountains, Santa Cruz County.

6. ANDALUSITE. Found in abundance in the slates in Fresno and Mariposa Counties. In the former county, on the Chowchilla River, near the road to Fort Miller, or Millerton. In the latter, at Hornitas, at Moore's Hill, twelve miles south of Mariposa, and near the Ne Plus Ultra Mine. ANDRADITE-see Garnet.

7. ANGLESITE. Sulphate of lead. This is rather a common mineral in southeastern California, and specially so in Inyo County. In the Cerro Gordo it has yielded a very considerable portion of the lead bullion sent from that locality. It occurs with bindheimite and linarite and galena, at the Modoc Mine, and with geocronite and argentiferous galena and sinerite at the Santa Maria Mine, and the Eclipse Mine in the same county.

8. ANHYDRITE. Anhydrous sulphate of lime, found near Anaheim, in Los Angeles County, and in pale blue fibrous specimens in the Inyo Mountains, near Lone Pine; lately found in considerable quantity in the gypsum beds in Santa Barbara County-gray, very dense and heavy, compact to granular; shows signs of sedimentary origin.

ANHYDROUS SULPHATE OF SODA-See Thenardite.
ANTHRACITE-see Mineral Coal.

ANTIMONY-See Cervantite and Stibnite.

ANTIMONY OCHRE-see Cervantite.

ANTIMONY SULPHIDE-See Stibnite.