. A treatise on pharmacy .. . it willnever have the oil floating in globules upon the surface. There canbe no doubt of the increased action of emulsionized oils over those inwhich the oil globules have not been broken up, though on the otherhand it is less easy to take a dose of oil emulsionized than floating onthe surface of water or enveloped in the froth of porter or sarsaparillamead. It is generally customary to weigh the fixed oils or copaiva indispensing them, bnt if this is done when they are to be made intoemulsions it should not, be done in the bottle in which they are to bedispensed.
. A treatise on pharmacy .. . it willnever have the oil floating in globules upon the surface. There canbe no doubt of the increased action of emulsionized oils over those inwhich the oil globules have not been broken up, though on the otherhand it is less easy to take a dose of oil emulsionized than floating onthe surface of water or enveloped in the froth of porter or sarsaparillamead. It is generally customary to weigh the fixed oils or copaiva indispensing them, bnt if this is done when they are to be made intoemulsions it should not, be done in the bottle in which they are to bedispensed. The adhesion of the oil to the glass will interfere with itscomplete separation into an emulsion, and a portion of this adheringoil will contaminate the emulsion when made and be apparent in eachdose drawn from the vial. In the elegant emulsions of almonds, , and of pumpkin seeds, No. 143, the fixed oils present in the3 are naturally associated with mucilaginous ingredients which PREPARATION OF MIXTURES. 807 Fig. French porcelain mortar. Fig. 233. emulsonize them with water without the addition of any foringredient. Volatile oils, especially oil of turpentine and oil of copaiva, requirethe admixture of fixed oils in orderproperly to incorporate them withviscid materials, or they may be mixedwith yelk of eggs, an admirablenatural mixture of a fixed oil withalbumen. For making emulsions I prefer theFrench pattern porcelain mortar, ; in this a thick mucilage is firstmade and the oil added, while by tri-turation the combination is effectedcompletely and satisfactorily. It is noticeable that emulsions areusually quite incompatible with neu-tral or acid salts, though rather im-proved by some alkaline salts, as borax, by carbonated alkali and bycaustic ammonia. They are also incompatible with any considerableproportion of alcohol, though moderate quantities of thetinctures, made with diluted alcohol, may be added afterthey are fully diluted. If spirit of nitric eth
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectpharmacy, bookyear186
