1314

ELEMENTS OF MATERIA MED1CA.

16. Unguentum Gai.lje compositum. See p. 737.

17. Tinctura Camphors composita. See p. 797.

18. Pilulje St yrac is composita 3. See p. 934.

19. Pulvis Ipecacuanha: composites. See p. 1024.

20. Pilulje Ipecacuanha composite, L. (Compound P°' ^ ;p >Ipecacuanha, 3iij.; Squills, recently dried; Ammoniacum, ofMixture of Acacia, q. s. Beat them together until they are incorp p ()S c—Narcotic, sudorific. Employed in chronic mucous catarrh, ^. c jjjj. Jjd*gr. v. to gr. x.—The formula for the Pilulee Ipecacuanha et Opth

has already been given. (See p. 1025).

21. Pulvis Kino composites. See p. 1145.

22. Electuarium Catechu. See p. 1157.

of

prep

ari 11 ^

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c. Morphia and its Preparations.

1 . Morphia , L.—The following are the directions formorphia, given in the London Pharmacopoeia:—

Take of Hydrochlorate of Morphia , 5 j.; Solution of Ammonia, f 3 v- t ya ter, .Water, Oj. Add the Hydrochlorate of Morphia , first dissolved in a pi" 1 0 yVI> at ' 5the solution of Ammonia with an ounce of water, shaking them together,thrown down wash with distilled water, and dry it with a gentle heat. vg

* 1 ^

In this process the ammonia unites with the hydrochloric acnbmorphia being set free is precipitated. ’ fot’""

The physical and chemical properties of this substance ha a rt'already (p. 1281) described. The following characters of m° r P

given in the pharmacopoeia.

ale " 1

Very little soluble in cold water, little in boiling water, but very readil.V , ® ¥ |, ( ,n

th«

0” (i 'f

lhis solution exhibits alkaline properties when tried with turmeric ; {

spirit is distilled from it, it yields crystals, which are totally' destroyed byaddition of nitric acid, morphia becomes first red, and afterwards yellow- 0 ;ab e "^sesquichloride of iron gives it a blue colour. Chlorine arid [afterwards] amjn ,n' 11 ,

aiusj i i*'* ^

added to its salts, they are rendered of a brown colour, which is destroyed^ j. puta*

chlorine is added. Morphia is also precipitated from its salts by solutionwhich added in excess re-dissolves it.

2 . Morphia Acetas, L. E .— This salt is thus directed to

be f

Mix

tb®

M' 1

' Let the liq°° r

gold 1

tie"

pared by the London College:

Take of Morphia, 5yj.j Acetic Acid, f^iij.; Distilled Water , fjiv.with the water, and pour them upon the morphia to saturation,rate with a gentle heat, that crystals may be formed.

In this process the acetic acid saturates the morphia, and th eby evaporation yields crystallized acetate of morphia.

The following are the directions of the Edinburgh College :■

“ Take muriate of morphia, any convenient quantity. Dissolve it in IqJ-

its weight of warm water, and, when the solution is cool, add aqua a0 \ ur of * t [idually, and with constant agitation, until there is a permanent but faint o jy <*.

■ ■ -„;,i .1-.... „ „..i:„„ «i.„. ...-d, ii modern p /

monia in the fluid. Collect the precipitate on a calico filter, wash it ;

V* t]

n> ‘ jeH;

cold water, and dissolve it by means of a slight excess of pyroligneous aeon g 0 pcparts of warm water for every part of muriate of morphia that was use j^jutrate the solution over the vapour-bath, and set aside to crystallize- uja &squeeze the crystals, and dry them with a gentle heat. More acetate ol 111be obtained on concentrating the mother liquor.”

In this process the ammonia decomposes the muriate of pyf"and the precipitated morphia is afterwards dissolved in difoligneous (acetic) acid.

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