## A Treatise on Coal Mining: Prepared for Students of the International Correspondence Schools, Scranton, Pa. ... |

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airway angle base bearing calculated called cause chord circle coal column contains course cubic feet curve decimal determined diameter difference direction distance divided draw entry equal example explosion expressed face figure force formula fraction given gives greater Hence horizontal inches increased intersection lamp length locating marked means measured meridian method mines minute move multiplied necessary notes obtained opposite pass plat plate position pounds pounds per square PRACTICE pressure produced quantity radius reading reduced remaining represent result right angles root scale shaft shown side sight SOLUTION split square foot station surface survey taken tangent temperature tion transit triangle turned units velocity ventilating vernier vertical volume weight

### Priljubljeni odlomki

Stran 49 - States surveyor-general that five hundred dollars' worth of labor has been expended or improvements made upon the claim by himself or grantors; that the plat is correct, with such further description by such reference to natural objects or permanent monuments as shall identify the claim, and furnish an accurate description to be incorporated in the patent. At the expiration of the sixty days of publication the claimant shall file his affidavit, showing that the plat and notice have been posted in...

Stran 47 - No claim shall extend more than three hundred feet on each side of the middle of the vein at the surface...

Stran 10 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints — 1 quart (qt...

Stran 49 - If no adverse claim shall have been filed with the register and the receiver of the proper land office at the expiration of the sixty days of publication, it shall be assumed that the applicant is entitled to a patent, upon the payment to the proper officer of live dollars per acre, and that no adverse claim exists...

Stran 48 - ... and shall post a copy of such plat, together with a notice of such application for a patent, in a conspicuous place on the land embraced in such plat previous to the filing of the application for a patent, and shall file an affidavit of at least two persons, that such notice has been duly posted...

Stran 48 - The first and fourth terms of a proportion are called the extremes; and the second and third terms the means. Thus, in the proportion a : b = с : d, a and d are the extremes, and b and с the means.

Stran 12 - A circle is a plane figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within called the center.

Stran 44 - The terms of a ratio are the two numbers to be compared; thus, in the above ratio, 20 and 4 are the terms. When both terms are considered together, they are called a couplet ; when considered separately, the first term is called the antecedent, and the second term the consequent. Thus, in the ratio 20 : 4, 20 and 4 form a couplet, and 20 is the antecedent, and 4 the consequent.

Stran 48 - A patent for any land claimed and located for valuable deposits may be obtained in the following manner...

Stran 12 - The number thus added to itself, or the number to be multiplied, is called the multiplicand. The number which shows how many times the multiplicand is to be taken, or the number by which we multiply, is called the multiplier.