628

Earths and Earthy Salts.

part in.

dence can be placed for the cure of any disease." 1 The doserequires to be carefully apportioned, and very gradually in-creased, from r^v, which are sufficient at first, until nixx aretaken twice a day; or more, if nausea be not excited. It issometimes used externally as an escharotic to fungous ulcersand specks on the cornea.

As antidotes of muriate of barytes, when it has been taken asa poison, M. Orfila has proposed the soluble sulphates, " ifadministered before a quantity of the salt sufficient to exert itsfatal influence on the nervous system be absorbed." 2

LIQUOR CALCIS, Lond. Lime-water.

" Take of lime, half a -pound; boiling distilled water, twelvepints. Pour the water upon the lime, and agitate them toge-ther; cover the vessel directly, and set it apart for three hours;then preserve the solution upon the undissolved lime, in wellstopped glass bottles, and pour off the clear fluid when it iswanted for use."

Solutio Calcis, sive Aqua Calcis, Edin. Solution of Lime,or Lime Water.

" Take of lime fresh burnt, half a pound. Put it into anearthen vessel, and sprinkle upon it four ounces of water, keep-ing the vessel covered until the lime becomes hot, and falls intopowder; then pour on it twelve* pounds of water, and mix thelime with water by agitation. After the lime shall have subsid-ed, repeat the agitation; and let this be done about ten times,the vessel being kept shut that the free access of the air maybe prevented. Y'maWy, let the water be strained- throughpaper, interposing between it and the funnel glass rods, thatthe water may pass through as quickly as possible. It is to bepreserved in very well stopped bottles."

Dublin.

Take of fresh burnt lime, a pound;

boiling

water, a pint.

Put the lime into an earthen vessel, and sprinkle the waterupon it, keeping the vessel shut until it becomes hot, and fallsinto powder; then pour upon it three gallons qf water. Thevessel being again shut, let the mixture be frequently shakenfor twenty-four hours; and then filter the solution throughpaper placed in a covered funnel, and preserve it in well stoppedbottles."

Syn. Eau de Chaux (F.), Kalkwasser (G.), Aqua di Calee (/.).

Of these formulae, that of the London College is to be pre-ferred : as by keeping the solution upon the lime it is always ina completely saturated state, and the supernatant fluid is gene-rally sufficiently clear to allow it to be decanted off'without fil-tration. It is however adviseable, in making the solution,

• Observations on Remedies for Lues Venerea, 92.2 Traits des Poisons, &c, vol. i. p. 182.