THE BENJAMIN TREE.

939

(V* Balsam,; Balsam for Cuts; Friar's Balsam; Jesuit 's Drops ; The

[**«»** Balsam. (Benzoin, jiijss. [in coarse powder, gvj. E.~\ ;

A[ 0 Iax » drained, Sijss. L.] ; Balsam of Tolu, 3x. [Peru-balsam, 3iv. E .];

fjly [East Indian Aloes, *j. E.] ; Rectified Spirit , Oij. [Oiij. and“ - • '' ' ~ *' ■

- Macerate for fourteen [seven, E. Z).] days, [pour off the clearthe r> ari( l strain. The ingredients used by the Dublin College areL *j arne as, and the proportions nearly identical with, those of thec a t a ? n College.) A stimulating expectorant: administered in chronics lt)t rtls: dose, fjss. to Igij. It is decomposed by water. A very plea-**ode of exhibiting it is in the form of emulsion, prepared withiw ' a ^ e anc ^ sugar, or yelk of egg. Tinctura Benzbini composita is5 C (j Anally applied to foul and indolent ulcers, to excite the vascularij a Jjjh and to improve the quality of the secreted matter. It is a fre-fii Ces application to recent incised wounds. If applied to the cut sur-hy^ causes temporary pain, and cannot promote adhesion (or union<<: first intention), though by exciting too much inflammation it may0»e, prevent it. But when the edges of the wound have beenMh / *-°Kc'her, the tincture may be carefully applied to the lint orplaster as a varnish and cement. Here it acts mechanically,^Hie ln ^ a * r > an( l keeping the parts in their proper position. In the(V w ’ay, it may sometimes prove serviceable in contused wounds.p[j * or Black Sticking Plaster ( Emplastrum adhcesivum Anglicum,\v ar , 0r -) is prepared by brushing first a solution of isinglass, and after-2 s a spirituous solution of benzoin, over black sarcenet.jp r ‘ ■A-vidtw Benzoicum, L. E. D. (Benzoin, lb. j. Put the benzoin inli^ e °P er cessel placed on sand, and the heat being gradually raised, sub-l)[i , Un fil nothing more rises ; press that which is sublimed, wrapped init, i 0,ls paper, and separate it from the oily part; afterwards again sublimeth at •'~~The directions of the Edinburgh College agree with these, exceptRifts or( l er “ any convenient quantity” of benzoin to be used, and “ ab^i^yoattrass” to be employed in the manufacture.—The process of theln ^allege is as follows : Benzoin, five parts ; Lime, fresh burnt;file jf** c Acid, of each, one part; Water, two hundred parts. Triturateof n r (:nz °in with the Lime, then boil the mixture in one hundred partsl! 0 jj a ter; suffer the vessel to rest, and pour off the liquor when cold.li r)u l le remainder in seventy parts of water, and again pour off the coldw r ‘ Evaporate the mixed liquors to one-half, filter them throughO and to the liquors, when cold, gradually add the Muriatic Acid .th e having decanted off the supernatant fluid, dry with a gentle heatw resi dual powder, previously washed with a small quantity of coldbp„.’ Pass it into a proper vessel, and with a slow fire sublime the>cackl).

H Hd t l >rocess °f the London and Edinburgh Colleges is the simplestfifted believe, the most economical. The following is the method prac-eaij ° n a large scale : —“ The better kind of benzoin is most economi-p rr)l ' Ot nployed : it may be put into an iron pot, set in brickwork over alft r ’ er fire-place; the sublimate is most conveniently received into a*ii* Pl^t°°d en k° X ’ ^ ne< ^ w ’ 1 ^ 1 paper, communicating by a conical iron or

li r

ittip i e nec h with the subliming pot. The first product may be sub-c ess a Se cond time in the same apparatus ; and by conducting the pro-Scir ra *"her rapidly, the acid condenses in beautiful prismatic crystals,e ' v hat elastic. If slowly sublimed, it is more powdery. By this