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The brain and spinal cord; the cerebro-spinal axis; myelencephalon. B. G. Wilder.

Spinal neurotics, or tetanics, those which affect the spinal cord. (c) Cerebro-spinal neurotics, or those which affect both brain and spinal cord.

Any moth of the genus Nonagria and allied genera, as the spindleworm and stalk borer.

ng to Notodonta, Nerice, and allied genera. The caterpillar of these moths has a hump, or spine, on its back.

Of or pertaining to a nucleus; as, the nuclear spindle (see Illust. of Karyokinesis) or the nuclear fibrils of a cell; the nuclear part of a comet, etc.

jective. In the Middle Ages, subject meant substance, and has this sense in Descartes and Spinoza: sometimes, also, in Reid. Subjective is used by William of Occam to denote that which exists independent of mind; objective, what is formed by the mind. This shows what is meant by realitas objectiva in Descartes. Kant an…

rection. Projecting his person towards it in a line which obliqued from the bottom of his spine. Sir. W. Scott.

ich forms the posterior segment of the skull and surrounds the great foramen by which the spinal cord leaves the cranium. In the higher vertebrates it is usually composed of four bones, which become consolidated in the adult. -- Occipital point (Anat.), the point of the occiput in the mesial plane farthest from the op…

ra). -- Old maid. (a) A woman, somewhat advanced in years, who has never been married; a spinster. (b) (Bot.) A West Indian name for the pink- flowered periwinkle (Vinca rosea). (c) A simple game of cards, played by matching them. The person with whom the odd card is left is the old maid. -- Old man's beard. (Bot.) (…

A white crystalline waxy substance extracted from the root of the leguminous plant Ononis spinosa.

n orache, a plant (Atriplex hortensis), often used as a pot herb; -- also called mountain spinach.

A locksmith's pinchers for grasping the point of a key in the keyhole, to open a door from the outside when the key is inside.

als in oysters. -- Pearl oyster. (Zoöl.) See under Pearl. -- Thorny oyster (Zoöl.), any spiny marine shell of the genus Spondylus.

objects) images free from aberration. It is used in reflecting telescopes. -- Parabolic spindle, the solid generated by revolving the portion of a parabola cut off by a line drawn at right angles to the axis of the curve, about that line as an axis. -- Parabolic spiral, a spiral curve conceived to be formed by the p…

Palsy of the lower half of the body on both sides, caused usually by disease of the spinal cord. -- Par`a*pleg"ic, a.

The aromatic and edible spindle-shaped root of the cultivated form of the Pastinaca sativa, a biennial umbelliferous plant which is very poisonous in its wild state; also, the plant itself. Cow parsnip. See Cow parsnip. -- Meadow parsnip, the European cow parsnip. -- Poison parsnip, the wild stock of the parsnip. --…

One of a peculiar kind of spines covering the surface of certain starfishes. They are pillarlike, with a flattened summit which is covered with minute spinules or granules. See Illustration in Appendix.

ment of the back of the neck in quadrupeds. It connects the back of the skull with dorsal spines of the cervical vertebræ, and helps to support the head. Called also paxywaxy and packwax.

a Pinguin) of the Pineapple family; also, the plant itself, which has rigid, pointed, and spiny-toothed leaves, and is used for hedges. [Written also pinguin.] Arctic penguin (Zoöl.), the great auk. See Auk.

Any one of numerous species of spiny-finned fishes belonging to the Percidæ, Serranidæ, and related families, and resembling, more or less, the true perches. Black perch. (a) The black bass. (b) The flasher. (c) The sea bass. -- Blue perch, the cunner. -- Gray perch, the fresh-water drum. -- Red perch, the rosefish.…