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34, 55, etc., being figurate numbers formed by adding successively the terms of the arithmetical series 1, 6, 11, 16, 21, etc.

lled a prime ('), composed of twelve seconds ('\'b7), as in the duodecimal system of arithmetic. 12 seconds ('\'b7) make 1 inch or prime. 12 inches or primes (') make 1 foot. B. Greenleaf.

ce, and a tough, fibrous bark, whence the name. The root it used in medicine and is both emetic and cathartic in properties. (b) The variety of common hemp (Cannabis Indica), from which hasheesh is obtained. -- Indian mallow (Bot.), the velvet leaf (Abutilon Avicennæ). See Abutilon. -- Indian meal, ground corn or mai…

The root of a Brazilian rubiaceous herb (Cephaëlis Ipecacuanha), largely employed as an emetic; also, the plant itself; also, a medicinal extract of the root. Many other plants are used as a substitutes; among them are the black or Peruvian ipecac (Psychotria emetica), the white ipecac (Ionidium Ipecacuanha), the basta…

genus Pedilanthus (P. tithymaloides), found in the West Indies, and possessing powerful emetic and drastic qualities.

ffodil. It has long, rushlike leaves, and yellow or white fragrant flowers. The root has emetic properties. It is sometimes called the rush-leaved daffodil. See Illust. of Corona.

s of an East Indian tree (Mallotus Philippinensis) used for dyeing silk. It is violently emetic, and is used in the treatment of tapeworm. [Written also kameela.]

oisonous white viscid juice, of an acrid taste. It has often been used in medicine as an emetic, expectorant, etc. L. cardinalis is the cardinal flower, remarkable for the deep and vivid red color of its flowers.

A yellowish green resin from Lobelia, used as an emetic and diaphoretic.

ary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.

Sexagesimal, or made on the scale of 60; as, logistic, or sexagesimal, arithmetic. Logistic, or Proportional, logarithms, certain logarithmic numbers used to shorten the calculation of the fourth term of a proportion of which one of the terms is a given constant quantity, commonly one hour, while the other terms are ex…

A system of arithmetic, in which numbers are expressed in a scale of 60; logistic arithmetic.

d by adding the quantities together and dividing by their number, which is called an arithmetical mean. A geometrical mean is the square root of the product of the quantities.

a mental power This eye shoots forth! Shak. Mental alienation, insanity. -- Mental arithmetic, the art or practice of solving arithmetical problems by mental processes, unassisted by written figures.

Imitative; mimetic. Oft, in her absence, mimic fancy wakes To imitate her. Milton. Man is, of all creatures, the most mimical. W. Wotton.

over it. A letter desires all young wives to make themselves mistresses of Wingate's Arithmetic. Addison.

A brown, amorphous, bitter substance having a strong emetic action, extracted from the root of the mudar.

and a rubefacient. Taken internally it is stimulant and diuretic, and in large doses is emetic. Mustard oil (Chem.), a substance obtained from mustard, as a transparent, volatile and intensely pungent oil. The name is also extended to a number of analogous compounds produced either naturally or artificially.…

The arithmetical character 0; a cipher. See Cipher. To set at naught, to treat as of no account; to disregard; to despise; to defy; to treat with ignominy. "Ye have set at naught all my counsel." Prov. i. 25.

ical facts, quantities, etc. Esp., the system of figures, letters, and signs used in arithmetic and algebra to express number, quantity, or operations.