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

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airway amount atoms base body calculated called carbonic cause cent cipher circle coal column contained cubic feet cubic foot curve decimal denominator diameter difference direction distance divided divisor entry equal example explosion expressed feet per minute figure flame force formula four fraction gases given greater Hence inches increased indicated lamp length less means measure mines minute multiplied nearly necessary obtained opposite pass pounds pounds per square PRACTICE pressure proportion quantity quotient radius ratio reduced remaining represent resistance result right angles root rule scale shaft shown side sine SOLUTION split square foot station subtract surface taken tangent temperature triangle units varies velocity ventilating volume weight write

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Page 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...

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

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

Page 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...

Page 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...

Page 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.

Page 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.

Page 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.

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

Page 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.