VI** V •But Mr. Mingles wrote a letter.—New Orleans Picayune.Squaring the Circle.There is a record of an attempted quadrature in Egypt 500 years before the exodus of the Jews, and, if we are to take Hone as an authority, the problem was solved by Hippocrates, tike geometrician of ('bios, nearly 500 years B. By some it is claimed that the efforts of Hippocrates were in the direction of converting a circle into a crescent because he had found that the area of a ligtire produced by drawing two perpendicular radii is exactly equal to the triangle formed by tie* line of conjunction. This last Is the famous theorem of the “limes of Hippocrates.” The “Papyrus Rhind,” the oldest mathematical book in the world, written by one Ahmes about 2,000 ! B. C., gives a rule for “squaring the circle.” The rule given requires that the (lijfmeter of a circle shall be shortened by one-ninth and the square (‘reeled upon this shortened line. The early Babylonians also worked at this old mathematical problem, as is attested by several references in the Talmud.