Meat Industry.—There are, in the United States, about 1650 slaughter houses employing nearly 110,000 people with about $4,000,000 capital invested. The annual product of the meat industry is not far from $1,400,000,000.
Medicine Chests.—Every one should maintain a medicine chest or shelf containing simple remedies, but these should never be selected without the advice of a physician. Thousands of persons injure themselves by self-dosing. When in the slightest doubt, visit or call your doctor. Most ailments can be prevented or cured by a skillful physician, but if allowed to run they may result seriously or fatally. Do not take chances with yourself.
Microscope.—The first microscope is said to have been invented by a Dutchman in 1590, but its invention has been attributed to Galileo in 1610. The microscope has been perfected until a millionth part of a grain of blood may be detected by means of the spectrum lens.
Mineral Industry.—The minerals mined in the United States every year have a value of about $904,000,000.
Mining Industry.—Nearly 1,140,000 men are engaged in the mines of the United States, over 90 per cent of whom are wage earners.
Moon.—The moon is the earth's only satellite. It circles around the earth every 27 days, 7 hours, and 43.2 minutes, on the average; but because its motion is common with the earth around the sun, the mean duration of the lunar month is 29 days, 12 hours, 44.05 minutes. The distance from the earth to the moon is from 238,850 to 252,820 miles, although at times the moon is only 216,477 miles from the earth. The moon's diameter is 2,162 miles. The surface of the moon contains about 14,685,000 square miles, or about four times the area of Europe. The moon, although very much smaller than the planets, exerts a stronger attractive force on the earth because of its nearness. The moon is, unscientifically speaking, drawing everything on the earth towards it, while at the same time the earth is exerting the same attractive force upon the moon. Because of this, the oceans, being composed of water, which is easily movable, respond and move with the moon, causing the tides. This same attractive force is brought to bear upon the earth itself, but because it is of greater density it is not perceptibly affected. Theoretically, every lake and pond has a tide, but the motion of the water is too slight to be measured. The moon is supposed to possess neither atmosphere nor water. Thousands of ages ago the lunar surface was subjected to terrible volcanic actions which forced the land into ridges, some of them supposed to exceed 20,000 feet in height, and rents and depressions of corresponding depths. The surface of the moon appears to be desolate and to be unfitted to support any form of life.
Mortality.—About 15 people out of every thousand of the population of the United States die during each year. The percentage of male deaths is somewhat larger than that of female, due to accidents. The annual death rate per thousand is: 13.7 in Los Angeles, 15 in San Francisco, 17 in Denver, 19 in Washington, D. C., 14.6 in Chicago, 14.3 in Indianapolis, 15.5 in Louisville, 20.2 in New Orleans, 18.7 in Baltimore, 16.8 in Boston, 14.0 in Detroit, 10.7 in Minneapolis, 11.4 in St. Paul, 14.4 in Kansas City, 15.8 in St. Louis, 14.7 in Omaha, 16 in New York, 16.5 in Cincinnati, 12.9 in Cleveland, 16.4 in Philadelphia, 15.8 in Pittsburgh, 20.1 in Memphis.
Mortgages.—A mortgage is a bill-of-sale from the owner of property to another competent to hold property. The one giving the mortgage is called the mortgagee, and the one to whom it is made is known as the mortgagor. A mortgage differs from a bill-of-sale in that the mortgagor cannot obtain ownership of the property mortgaged, unless the amount involved is not paid him at the expiration of the mortgage, or the interest is not met. All mortgages must be registered. Mortgaged property cannot be moved, altered, or changed without the consent of the mortgagor. The property, unless it is land, should be insured, and the insurance policy made payable to the mortgagor in case of loss by fire, but the mortgagor can collect only that part of the insurance money which represents the amount of the mortgage. Should the mortgagee fail to pay interest at the period stated in the mortgage, or should he be unable or refuse to liquidate the mortgage at its expiration, the mortgagor cannot seize the property except by act of law. It must be advertised and sold at auction. If the mortgaged property brings a price lower than the face of the mortgage, the mortgagor loses the difference, and has to bear the expense of foreclosure. If more than the face of the mortgage is realized, the mortgagee is entitled to what is received, less the face of the mortgage and the expenses of foreclosure.
Natural Gas.—A gas generated underground, and due to chemical action beneath the earth's surface. It is found in various parts of the world, and is used for fuel and illuminating, largely for the former.
Naturalization.—Any foreigner or alien, except those of the Mongolian or Brown Race, may become a citizen of the United States, and be entitled to every privilege granted to natural-born citizens, except that he cannot become President or Vice-President of the United States. An alien cannot make application for naturalization or citizenship until he is 18 years of age, and he cannot apply for his Second or Final Paper of Naturalization until he has lived in the United States for at least five years, and he must make his Declaration of Intention two or more years before he applies for his Second or Final Paper. The applicant must be a resident of the State in which he makes petition for naturalization not less than one year, and have lived at least four years additional in the same State, or in some other State. He must make application to the United States District Court in the State in which he lives. The cost of becoming naturalized is less than $5.00. A married woman does not have to be naturalized if her husband has become a citizen of the United States, and the children of the naturalized parents become citizens at 21 years of age without taking out naturalization papers. Full particulars regarding the process of naturalization are very plainly and explicitly stated in a book entitled "How to Obtain Citizenship," by Nathaniel C. Fowler, Jr.