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ted or nonmedullated. in both kinds the essential part is the translucent threadlike axis cylinder which is continuous the whole length of the fiber. -- Nerve stretching (Med.), the operation of stretching a nerve in order to remedy diseases such as tetanus, which are supposed to be influenced by the condition of the…

See Axis cylinder, under Axis.

A substance, resembling keratin, present in nerve tissue, as in the sheath of the axis cylinder of medullated nerve fibers. Like keratin it resists the action of most chemical agents, and by decomposition with sulphuric acid yields leucin and tyrosin.

s to return to its former position not depart more widely from it, as a perfect sphere or cylinder on a horizontal plane. -- Neutral salt (Chem.), a salt formed by the complete replacement of the hydrogen in an acid or base; in the former case by a positive or basic, in the latter by a negative or acid, element or rad…

Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

let, or inlet, pipe projecting from the end or side of a hollow vessel, as a steam-engine cylinder or a steam boiler.

ponent part performing an essential office in the working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine.

That oscillates; vibrating; swinging. Oscillating engine, a steam engine whose cylinder oscillates on trunnions instead of being permanently fixed in a perpendicular or other direction. Weale.

nal-combustion engines consisting of the following operations: First stroke, suction into cylinder of explosive charge, as of gas and air; second stroke, compression, ignition, and explosion of this charge; third stroke (the working stroke), expansion of the gases; fourth stroke, expulsion of the products of combustion…

A high and narrow tank, with a central cylinder for the introduction of compressed air, used in the agitation and settling of pulp (pulverized ore and water) during treatment by the cyanide process; -- so named because, though originally devised in New Zealand, it was first practically introduced in Pachuca, Mexico.…

elding ring, as of metal, which surrounds a piston and maintains a tight fit, as inside a cylinder, etc.

eral parts, so as to be removed from the mold without injuring it. Pattern box, chain, or cylinder (Figure Weaving), devices, in a loom, for presenting several shuttles to the picker in the proper succession for forming the figure. -- Pattern card. (a) A set of samples on a card. (b) (Weaving) One of the perforated ca…

A slender cylinder or strip of black lead, colored chalk, slate etc., or such a cylinder or strip inserted in a small wooden rod intended to be pointed, or in a case, which forms a handle, -- used for drawing or writing. See Graphite.

(Mach.) A little faucet in a water pipe or pump, to let air out, or at the end of a steam cylinder, to drain it.

point of the membrane records the movements of the latter, as it vibrates, upon a moving cylinder or plate.

and reproduction of audible sounds, as articulate speech, etc. It consists of a rotating cylinder or disk covered with some material easily indented, as tinfoil, wax, paraffin, etc., above which is a thin plate carrying a stylus. As the plate vibrates under the influence of a sound, the stylus makes minute indentation…

hich either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes. Piston head (Ste…

To flatten and make into sheets or plates; as, to platten cylinder glass.

er. (Stone Working) See Feather, n., 7. -- Plug centerbit, a centerbit ending in a small cylinder instead of a point, so as to follow and enlarge a hole previously made, or to form a counterbore around it. -- Plug rod (Steam Eng.) , a rod attached to the beam for working the valves, as in the Cornish engine. -- Plug…

A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.