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rn latitudes. Gray. -- Mountain sparrow (Zoöl.), the European tree sparrow. -- Mountain spinach. (Bot.) See Orach. -- Mountain tobacco (Bot.), a composite plant (Arnica montana) of Europe; called also leopard's bane. -- Mountain witch (Zoöl.), a ground pigeon of Jamaica, of the genus Geotrygon.

A machine, used in factories, for spinning cotton, wool, etc., into yarn or thread and winding it into cops; -- called also jenny and mule-jenny. Mule armadillo (Zoöl.), a long-eared armadillo (Tatusia hybrida), native of Buenos Ayres; -- called also mulita. See Illust. under Armadillo. -- Mule deer (Zoöl.), a large d…

A genus of marine gastropods, having rough, and frequently spinose, shells, which are often highly colored inside; the rock shells. They abound in tropical seas.

al; as, mushroom cities. Mushroom anchor, an anchor shaped like a mushroom, capable of grasping the ground in whatever way it falls. -- Mushroom coral (Zoöl.), any coral of the genus Fungia. See Fungia. -- Mushroom spawn (Bot.), the mycelium, or primary filamentous growth, of the mushroom; also, cakes of earth and ma…

Of or pertaining to the myelencephalon; cerebro-spinal.

The brain and spinal cord; the cerebro-spinal axis; the neuron. Sometimes abbreviated to myelencephal.

Inflammation of the spinal marrow or its membranes.

The central canal of the spinal cord.

The spinal cord. (Sometimes abbrev. to myel.)

Of or pertaining to the myelon; as, the myelonal, or spinal, nerves.

A genus of very large hairy spiders having four lungs and only four spinnerets. They do not spin webs, but usually construct tubes in the earth, which are often furnished with a trapdoor. The South American bird spider (Mygale avicularia), and the crab spider, or matoutou (M. cancerides) are among the largest species.…

Having numerous spines, as certain fishes.

The drupaceous fruit of two South African shrubs of the genus Arduina (A. bispinosa and A. grandiflora).

d volition. In vertebrates it is often divided into three systems: the central, brain and spinal cord; the peripheral, cranial and spinal nerves; and the sympathetic. See Brain, Nerve, Spinal cord, under Spinal, and Sympathetic system, under Sympathetic, and Illust. in Appendix. -- Nervous temperament, a condition of…

ystem; taining to, situated in the region of, or on the side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As applied to vertebrates, neural is the same as dorsal; as applied to invertebrates it is usually the same as ventral. Cf. Hemal. Neural arch (Anat.), the cartilaginous or bony arch on the dorsa…

The dorsal process of the neural arch; neural spine; spinous process.

tion of nervous debility supposed to be dependent upon impairment in the functions of the spinal cord.

The central canal and ventricles of the spinal cord and brain; the myelencephalic cavity.

ive tissue framework which supports the nervous matter and blood vessels of the brain and spinal cord.

A metameric segment of the cerebro-spinal nervous system.