The Huyck and Hubbard claim, fronting on Gold Run cañon, has a sluice tunnel, but is waiting for cheaper water, and doing nothing.

The Home Ticket has been worked four years, and uses 350 inches in daytime. The gross yield in May and June, 1867, was about $100 per day.

The Newark was opened in 1863, uses 300 inches in the day-time, and yielded about $75 gross in June, 1867.

POTATO RAVINE.-The following companies tail into Potato ravine, a tributary of Cañon creek:

Baldwin and Bailey have been at work three years, using 275 inches of water in the day-time, and obtaining about $70 gross per day.

The Harris claim is large and unopened.

The Fitzpatrick claim yields about $75 gross per day, was opened in 1866, and consumes 330 inches of water in day-time.

The Cedar Company have 900 by 800 feet, began work in 1861, run 300 inches day and night, and obtain about $230 in 24 hours. The yield in 1866 was $35,000, one-half of it profit.

Stewart and Kinder have 500 feet square, fronting on both Cañon creek and Potato ravine, but are not at work. Along Cañon creek there is a rim rock, so they will tail into Potato ravine. They refused an offer of $1,500 for the claim. The Judd and Griffin claim, 1,000 feet square, has been worked since 1854, and was sold in 1866 for $3,500. The yield is about $75 per day, with 270 inches running twelve hours out of the twenty-four. To get drainage an open cut was made 600 or 700 feet long in the rim-rock, and in one place 40 feet deep. Huyck and Judd have one of the most profitable claims of the district on the eastern side of Indiana Hill cañon, which empties into the north fork of the American river. They have been at work since 1854, use 275 inches of water in the day-time, and cleared $7,000 in 1866.

The Hoskin claim adjoining is open, but is not worked.

INDIANA CEMENT MILL.-Mallory, Gaylord & Co. are working with an eightstamp cement mill, driven by a hurdygurdy wheel. Their claim is the only one in the district in which the bed-rock has been reached. Their mode of getting out dirt is to cut a tunnel 60 or 70 feet on the bed-rock, let off a blast of 200 kegs of powder, sluice off the top dirt, and run the cement through the mill. INDIANA CANON CLAIMS.-The following claims tail into Indiana Hill cañon. The Hawkins claim was opened this year, uses 350 inches night and day, and yields $200 in 24 hours.

The Brink claim was opened in 1864, but is not worked now on account of disturbance of the telegraph or flume from which the pipe is fed. The yield was about $75 per day, and the quantity of water 30 inches. Work will be resumed next year.

Stewart and Prindle opened their claim in 1867, use 200 inches day and night, and take out about $100 per day.

MOODY'S TAIL SLUICE.-In Cañon creek Moody & Co. have a double tail sluice 2,000 feet long, consisting of two flumes, each eight feet wide and about four feet deep. This sluice cost $25,000. The lower part was carried away in 1862, and the upper part was buried and had to be replaced. The yield was $10,000 in 1865, $7,000 in 1866, and $3,000 in the first half of 1867. An offer of $11,000 for a third interest was refused. The estimated receipts for 1867 are $10,000. Most of the cleaning up is done in September and October, when there is not much water for piping.

KINDER'S TAIL SLUICE.-Kinder and White have a tail sluice in Cañon creek, and claim the creek for a mile and a half below Moody & Co. In the upper part of their claim they have two sluices eight feet wide and 700 feet long. Half of the sluice was sold in 1865 for $3,000, but since then it has become more valuable. The grade is three inches to 12 feet. This sluice was carried away in 1865.

The following companies tail into the two tail sluices in Cañon creek:

The Gold Run tail sluice, in Gold Run cañon, is 1,500 feet long, six feet wide, and yields $6,000 or $7,000 a year. It tails into Cañon creek.

Goosling & Co. have a tail sluice 3,000 feet long in Goosling ravine, and four companies tail into it. Two tail sluices are buried 20 or 30 feet deep in this mine. Huyck and Judd have 1,000 feet of tail sluice in Indiana Hill cañon. HOSKINS TAIL SLUICE.-The Hoskins tail sluice is in Indiana Hill ravine, which is so steep that the sluice is in short sections, the longest 24 feet, and between the sections the water pitches down over steep rocks. There are in all fifteen boxes of main tail sluice, six or eight feet wide and two or two and a half feet deep, with a grade of eight inches to 12 feet.

Besides the main sluice boxes there are a number of undercurrent boxes, from six to nine feet wide, 14 inches deep, with a grade of 12 or 13 inches to 12 feet. Not more than one-fifth of the matter in the main sluice gets into the undercurrent, passing through a cast grating of white iron, with openings an inch wide, eight inches and a half long, separated by bars an inch and a half thick on top. There are usually from 600 to 1,200 inclies of water running in the main sluice and 120 in the undercurrent, which latter catches three times as much gold as the former, because the current is slower and shallower.

There are second undercurrents, or secondaries, as they are usually called. Their grade is 14 or 15 inches to the box, their width 30 inches, and their depth 12. They take one-fifteenth of the water of the undercurrent, and catch oneeighth as much gold. They are especially serviceable for catching quicksilver. The spaces in the grating are five inches long and three-eighths of an inch wide. There are three boxes of 12 feet to each undercurrent, and two to each secondary. The undercurrents always pay where the gold is fine, and the secondaries are especially serviceable in steep cañons.

DUTCH FLAT.-Dutch Flat, on the north side of the divide between Bear river and the north fork of the American river, and within half a mile of the line of the Central Pacific railroad, has for 12 years been one of the leading hydraulic camps of the State. It is pleasantly situated, and is one of the most prosperous towns in the mines, although the monthly gold yield was thrice as great in 1858 as it is now. There are many comfortable homes, most of the people consider themselves permanent residents, and there is a steady increase in the number of families. Dutch Flat, probably alone of all the mining towns, has never been burned down, and only one house has been burned. The shipment of gold in January, 1867, was $31,600; in February, $33,000; in March, $43,000; in April, $74,000; in May, $66,000; and in June, $60,000. These shipments included much from Gold Run.

Most of the soft gravel that covered the Blue lead, and that could be washed down readily with the pipe, has been washed away, and the blue cement, which is too hard for the pipe, and perhaps not rich enough for the stamp, has been reached; and most of the claims are now lying idle in the hope that some other mode will be devised of working them.

The principal claims at Dutch Flat, commencing on Bear river, at the northeastern corner of the district, are the following:

PHENIX AND AMERICAN.-The Phoenix, 900 feet long by 300 wide, was

opened in 1857 and was worked until 1865, with an average yield of $150 and an expense of $60 per day. All the soft gravel has been washed and the hard cement remains. The depth to the bed rock is not known.

The American, 900 feet long by 400 feet wide, was opened in 1857, and was worked for six years as a hydraulic claim, yielding $150 per day. It will not pay now for piping, and Chinamen are sluicing in it.

BUCKEYE. The Buckeye was opened as a sluicing claim in 1854, and it was piped from 1857 till 1867, and may be regarded as worked out for the hydraulic process. It has used 250 inches of water and employed from four to six men. An incline was sunk 250 feet below the level of the present workings to the bed rock, and the cement taken out in going down yielded $8 to the car-load, and not more than one-third of the gold was washed out. If this statement be correct, and if the cement found in the incline was a fair average of all in the claim, the Buckeye is an extremely valuable piece of property.

DUTCH FLAT AND QUEEN CITY.-The Dutch Flat, 1,800 by 900 feet, was opened in 1857, and is still at work with 12 men. The yield is from $200 to $400 per day. The soft gravel will last another season. The company commenced work in 1854, cutting a tunnel for drainage, but after going 450 feet and spending $46,000 on it, they gave it up. Some of the rock was so hard that they paid $85 50 per lineal foot.

The Queen City, 900 by 250 feet, began piping in 1858, and will exhaust its soft gravel this year. Four men are employed; the yield is $130 to $150 per day, and 200 or 250 inches of water are used.

BEAR RIVER AND TEAFF.-The Bear River claim, 900 by 400, was opened in 1856, and will be exhausted, so far as the soft gravel is concerned, this year. Four men are employed, 250 inches of water are used, and the yield is $150 per day.

Teaff's claim, 900 by 310 feet on one side of the hill, and 1,500 by 900 on the other side, was opened as a pipe claim in 1855, and the soft gravel will be worked out next year. From 1857 to 1860 125 inches of water were used, and the average yield was $100 per day. About 80 feet have been washed away from nearly the entire area of the claim. The amount of water used is 250 inches, at an expense of $30 per day; four men are employed at $3 each; the total expenses are about $50 per day, and the yield $150. The head of water for piping is 120 feet.

FROM BOSTON TO YANKEE.-The Boston claim, 900 by 450 feet, was opened as a hydraulic claim in 1855, and the soft gravel will all be washed away this Four men are employed, 250 inches of water are purchased, and the yield is $150 per day.

The Gray Eagle, 900 by 300 feet, was piped from 1858 till this year, and now the soft gravel has all disappeared. The yield was $150 per day, and 250 or 300 inches were used per day.

The North Star was worked as a drift claim for a long time, and then piped. The soft gravel is all gone, and the claim is lying idle.

The Union is working, and paying good wages to two men.

The Yankee, at the junction of Dutch Flat ravine with Bear river, has worked off nearly all the soft gravel. In 1858 and 1859 it was worked as a drift claim by 16 men, and it yielded 250 ounces (about $4,500) per month.

DRIFT CLAIMS.-The Blue Cut struck pay in 1856 as a drift claim, and paid very high for a time, and now pays $400 per month. Four men are employed, and the claim is still worked by drifting.

The Potosi, a drift claim, pays 200 ounces per month to 12 men drifting day and night.

The Whynot Company is worked as a drifting claim; yield not ascertained. The Badger has 22 feet of drifting dirt, and has been very rich, but is working now on a small scale. In four years it paid $192,000 of dividends

MILL CLAIMS.-The Ohio claim has a four-stamp cement mill, which started this year and pays well. The cement is hauled out with a mule. The soft gravel has been sluiced off from the top.

The erection of a mill has been commenced on the Baker claim.

The German Company intend to build a mill.

OTHER CLAIMS.-The Deep Shaft claim is the property of the Water Company, and is worked by the hydraulic process, but the supply of water is irregular. When there are 250 inches of water the yield is about $150 per day.

The Iowa claim uses 250 inches, and pays $150 per day, but did not pay more than $100 previous to 1866. The soft gravel will be worked out next year. The North Star yielded $150 per day for four or five years, but the soft gravel is all gone now.

Between Dutch Flat Ravine and Squire's Cañon are a number of hydraulic claims that have been worked many years, and have paid very little more than expenses.

TEAFF'S TAIL SLUICE.-James Teaff, who owns one of the piping claims at Dutch Flat, also owns a tail sluice-probably the largest one in the State. The total length is 5,500 feet; 2,500 feet long, five and a half feet wide, and 26 inches deep, in a tunnel, and 3,000 feet long and six feet wide outside. The construction of the tunnel and sluice cost $55,000 in money and four years' time, and was completed in 1863. The Teaff, Dutch Flat, Queen City, Bear River, Franklin, Boston, and Iowa companies, with 1,550 inches of water, tail into it. It is paved all the way with boulders 14 inches deep. The grade is 10 inches to 12 feet, but eight inches would have been better. At intervals of 120 feet there are falls or dumps two feet and a half high in the tunnel and five feet high outside. These dumps are of great service in breaking up pieces of cement.

Boulders 10 and 15 inches in diameter are constantly rushing through the sluice, and some of 20 inches frequently pass. The great weight of these boulders rushing along at a speed of nearly 10 miles an hour tries the sluice severely, and the rock bottom is always worn down about two inches in three months, and half of the paving boulders are broken so as to be unfit for further use.

The rock for the paving is obtained by putting an iron grate in a sloping position in the sluice. The bars of the grate are an inch and a half thick and eight inches apart, so everything small passes through. A Chinaman stands by the grate, examines every boulder that stops, lays the good ones on one side, and throws the others over.

Every evening 15 or 20 pounds of quicksilver are put into the sluice, and the largest amount in the sluice at one time is 900 pounds. The owner of the sluice never buys any quicksilver, but has it to sell, for he catches more than he puts in. He cleans up several sections-a section is between two dumps-between Saturday night and Monday morning, which time he has for cleaning up under a contract with the companies. Six men are employed 20 hours-12 days' workin cleaning up a section of ten boxes or 120 feet, and the expense, including new stone and repairing, is $3 75 per box. The yield is usually $25 per box, or $250 per section, at a clean up, and there are 416 boxes in the sluice. Three men are constantly employed in looking after the sluice, and extra men are engaged to clean up.

The companies which tail into the tunnel have about 600 feet of their own sluices.

DRAINAGE OF BEAR RIVER.-Bear river, opposite to Dutch Flat, is 70 feet deep, with tailings, the mass of which extends for some miles above and many below. It has been proposed to cut a tunnel three miles long from Bear river at Secret ravine through the railroad divide to the north fork of the American river, the bed of which is 1,000 feet lower than that of Bear river. It is supposed that an immense profit would be derived from such an enterprise, though the cost of making a tunnel for that length 11 feet wide and eight feet high, at $40 per foot,

would be about $630,000. The bed of Bear river, opposite Dutch Flat, never was flumed, and is probably quite rich. The present deposit of tailings began to accumulate in 1858 or 1859. They rise about two feet per month from February till September, and then the floods of winter carry away a considerable portion of them.

SOUTH PLACER QUARTZ REGULATIONS.-There is no general quartz regulation for Placer county; each district has its own rules.

The following are the main provisions of the South Placer quartz regulations: Any person may take up and pre-empt one claim of 200 feet in length on the lode by 200 feet in width, (following the dip of the lode,) with all dips, spurs, angles, and courses, with all precious metals therein contained. Such claims shall be valid by the locator's posting one notice thereupon, naming the number of feet claimed each way from said notice; desig nating, if possible, by croppings, the general direction of said lode, but if no croppings are visible, then by the words easterly, westerly, northerly, or southerly, as the case may be; but in no case shall a location of a claim be invalid by reason of any misapprehension in regard to the direction of said lode. Notices of locations shall be put upon the records of this district, together with filing a copy of the same with the recorder, which shall give as full a description as possible of the claim.

All claims shall be recorded as above specified within 20 days from the date of their notice. All claims in this district shall be held by working the same, the work to amount to at least one full day's work to cach claim in cach company in every month in good faith; and after the sum of $50 to each name in such company shall have been expended upon the claim, on application to the recorder it shall be lis duty to go and see the work, and if he finds that the said amount of work or money has been expended as before stated, he shall give to the parties owning or their representatives a certificate stating that the said amount of work and money has been expended, which entitles the owners to lay over and suspend work for the term of six months from the date of said application, and the claim will not be considered forfeited until after the said six months has expired.

CANADA HILL AND LONE STAR REGULATIONS.-The quartz regulations of Canada Hill allow 200 feet on the lode to each person, and 50 feet on each side, and 10 feet on every cross-lode; and require five days' work per month for each individual claim or share.

In the Lone Star district, west of Auburn, the regulations allow 200 feet to each person, and 300 feet on each side. A company's claim may be held for the first year by doing work of the value of $25 within 60 days after the location; and an equal amount of work will hold it for any subsequent year.

GREEN EMIGRANT.-The Green Emigrant mine, three miles northwest from Auburn, is 1,000 feet long on a vein which appears to run north 65° west, but there are a number of veins that seem to concentrate at the top of the hill, in which a rich deposit has been found.

The vein which runs through the hill is called the Green Emigrant, is three feet wide, and dips 45° to the southwest. The foot-wall is serpentine and the hanging wall talcose slate and schist. The vein itself near the surface seems to be decomposed quartz, talcose, and schist. The middle parallel vein is 18 inches wide and nearly vertical, and the vein matter is like that in the Green Emigrant. The southwestern vein is four feet and a half wide, and dips 45° to the east. The vein matter is the same as in the other two. There are spaces of 50 feet between these parallel veins at the surface, but it is supposed that they unite 150 feet below the surface. The walls of the middle vein and the hanging wall of the southern vein are talcose slate; and the foot-wall of the latter vein is a hard rock resembling sienite. A shaft was sunk 10 feet in the southwestern vein, and the rock averaged $10 per ton. The mine was discovered in 1864, and not more than 50 tons have been crushed, yielding $100 per ton. The yield for the first two years was $20,000, but the proprietors refuse to tell what it has been since. Rumor, which probably exaggerates grossly, says that $100,000 have been taken out in a hand mortar in the first six months of 1867. That