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The innermost layer of the blastoderm and the structures derived from it; the hypoblast; the entoblast. See Illust. of Ectoderm.

In accord, harmony, or sympathy; having a mutual, esp. a private, understanding; of a hypnotic subject, being in such a mental state as to be especially subject to the influence of a particular person or persons.

mach; -- applied to a mode of budding from the interior of the gastric cavity, in certain hydroids.

One of a group of hymenopterous insects whose larvæ feed parasitically upon living insects. See Ichneumon,

A hydrous phosphate of alumina and manganese. It is generally of a rose-pink color, -- whence the name.

abdomen. (b) An arbitrary division of the abdomen above the umbilical and between the two hypochondriac regions.

Formed originating on the surface of the earth; -- opposed to hypogene; as, epigene rocks.

A segment next above the ceratohyal in the hyoidean arch.

e growth in which an organ grows more rapidly on its upper than on its under surface. See Hyponastic.

A crystallized, transparent mineral of the Zeolite family. It is a hydrous silicate of alumina and lime.

The hypothetical individual who is assumed as the person from whom any race, city, etc., took its name; as, Hellen is an eponym of the Hellenes.

ame; afterwards prepared from sea water; but now from certain minerals, as from siliceous hydrate of magnesia.

f the several quantities to be added to, or taken from, its position as calculated on the hypothesis of a mean uniform motion, in order to find its true position as resulting from its actual and unequal motion. Absolute equation. See under Absolute. -- Equation box, or Equational box, a system of differential gearing…

ing all the sides equal; as, an equilateral triangle; an equilateral polygon. Equilateral hyperbola (Geom.), one whose axes are equal. -- Equilateral shell (Zoöl.), one in which a transverse line drawn through the apex of the umbo bisects the valve, or divides it into two equal and symmetrical parts. -- Mutually equi…

The quantity of the combining power of an atom, expressed in hydrogen units; the number of hydrogen atoms can combine with, or be exchanged for; valency. See Valence.

by which one element replaces another in any particular compound; thus, as zinc replaces hydrogen in hydrochloric acid, their equivalents are 32.5 and 1. (b) The combining proportion by weight of a substance, or the number expressing this proportion, in any particular compound; as, the equivalents of hydrogen and oxyg…

A hydrous arseniate of copper, of an emerald-green color; -- so called from Erin, or Ireland, where it occurs.

so erythrol, erythroglucin, erythromannite, pseudorcin, cobalt bloom, and under the name phycite obtained from the alga Protococcus vulgaris. It is a tetrabasic alcohol, corresponding to glycol and glycerin.

nt. Exposing the shabby parts of the establishment. W. Irving. Establishment of the port (Hydrography), a datum on which the tides are computed at the given port, obtained by observation, viz., the interval between the moon's passage over the meridian and the time of high water at the port, on the days of new and full…

A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.