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hydrate, butylchloral hydrate, and almost any number of derivatives from these. Some of them are so volatile that they produce their effects when inhaled, others when sprayed upon the skin cause intense See also:

COLD (in O. Eng. cald and ceald, a word coming ultimately from a root cognate with the Lat. gelu, gelidus, and common in the Teutonic languages, which usually have two distinct forms for the substantive and the adjective, cf. Ger. Kolte, kalt, Dutch koude

cold and then See also:

ANAESTHESIA

anaesthesia; but taken in the broadest sense the action of all of them after absorption into the See also:

BLOOD

blood is very similar, and is exerted upon the central See also:

NERVOUS

nervous See also:

SYSTEM

system, more especially the cerebrum. In all cases there is a longer or shorter See also:

period of excitement, followed by See also:

INTOXICATION (Lat. toxicare, intoxicare, to smear with poison, toxicum, an adaptation of Gr. 'r(*uK v, sc. ¢apµasov, a poison smeared on arrows; roEov, bow)

intoxication or narcosis, and with large doses this passes into See also:

PARALYSIS, or PALSY (from Gr. aapal,6a , to relax; Wycliffe has palesy, and another old form of the word is parlesy)

paralysis and See also:

DEATH

death from depression of the See also:

RESPIRATORY

respiratory centre or of the See also:

heart. Small doses of any of them dilate the blood vessels from an action on the vaso-motor centre in the medulla oblongata, as a result of which the heart beats more rapidly and the blood circulates more freely; but larger doses have a See also:

general depressing effect upon the circulatory system. Under their action more See also:

HEAT (0. E. haktu, which like " hot," Old Eng. hat, is from the Teutonic type haita, hit, to be hot; cf. Ger. hitze, heiss; Dutch, hitte, heet, &c.)

heat is lost from the See also:

BODY

body, the general See also:

METABOLISM (from Gr. ,uera(3oXh, change)

metabolism is diminished and the temperature falls. With some of them, such as chloral and chloroform, the stimulation period is See also:

SHORT, FRANCIS JOB (1857– )

short compared with the narcotic period, while with others, such as ether, the See also:

REVERSE

reverse is the See also:

case.

End of Article: GROUP XVII

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