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ved from, chromium, when this element has a valence lower than that in chromic compounds. Chromous acid, a bluish gray powder, CrO.OH, of weak acid properties and regard as an acid.

A body obtained from hemoglobin, by the action of reducing agents in the absence of oxygen.

An apparatus for measuring the amount of hemoglobin in a fluid, by comparing it with a solution of known strength and of normal color.

Having the central florets of a flower head of a different color from those of the circumference.

Having all the florets in the same flower head of the same color.

Art or process of printing colored photographs.

A device for giving shifting effects of color to a photograph. The unmounted print, made translucent, is illuminated from behind with colored light.

A colored print made photomechanically.

The art of making photochromotypes.

Of or pertaining to polychromy; many-colored; polychromatic.

simple cleavage of the nucleus without change in its structure (such as the formation of chromosomes), followed by the division of the cytoplasm; direct cell division; -- opposed to mitosis. It is not the usual mode of division, and is believed by many to occur chiefly in highly specialized cells which are incapable o…

The yellowish green pigment in the inner segment of the cones of the retina. See Chromophane.

A chromosphere. [R.]

A compound or salt of chromous hydroxide regarded as an acid. [R.]

Same as Hemochromometer.

Same as Hæmochromometer.

circular, functioning as part of the genetic material of a cell, not integrated with the chromosome and replicating independently of the chromosome, but transferred, like the chromosome, to subsequent generations. In bacteria, plasmids often carry the genes for antibiotic resistance; they are exploited in genetic engi…

of vegetable cells. They are divided by their colors into three classes, chloroplastids, chromoplastids, and leucoplastids.

nce or adjustment of the several impressions in a design which is printed in parts, as in chromolithographic printing, or in the manufacture of paper hangings. See Register, v. i. 2.

he red pigment contained in the inner segments of the cones of the retina in animals. See Chromophane. W. KÜhne.