. An introduction to practical pharmacy: designed as a text-book for the student, and as a guide to the physician and pharmaceutist. With many formulas and prescriptions . Mortar and pestle for contusion. are flat at bottom, and the pestles terminate in a flattened ball; theyare tall in proportion to their diameter, as seen in the drawing. The laborious process of powdering drugs is greatly facilitatedby the employment of mills; some of the varieties of coffee andspice-mills met with in iron or hardware stores are exceedinglyuseful in the comminution of vegetable substances, for the prepara- 3
. An introduction to practical pharmacy: designed as a text-book for the student, and as a guide to the physician and pharmaceutist. With many formulas and prescriptions . Mortar and pestle for contusion. are flat at bottom, and the pestles terminate in a flattened ball; theyare tall in proportion to their diameter, as seen in the drawing. The laborious process of powdering drugs is greatly facilitatedby the employment of mills; some of the varieties of coffee andspice-mills met with in iron or hardware stores are exceedinglyuseful in the comminution of vegetable substances, for the prepara- 32 THE DISPENSING OFFICE. tion of tinctures, infusions, &c, and even, assisted with, suitablesieves, in their reduction to powder. A very excellent mill, called Swifts drug-mill, is figured and de-scribed in the chapter on powdering. Fig. 37 represents a spice-mill, which will be found convenient Fig. Spice-mill. where the drug is not too large to be introduced into it, in whichcase I use a stout pair of shears, a tobacco knife, or a large ironmortar, for its previous reduction. This has the advantage of beingsecured to a table by a clamp, so as to be removable at pleasure. To the physician who prepares his own powders, one or moresieves will be found very useful. The most permanent and desir-able kind is that made of wire gauze, though hair and bolting-clothsieves are somewhat less costly. The latter answer very well ifkept clear of moths; a sieve with a covering at top and bottom ispreferable. These coverings should be made of leather, stretchedover hoops rather than of wood, which is liable to warp and crack. I shall have occasion to speak of the employment of coarse sievesin the preparation of powders for displacement, and need onlymention them in this place, to refer to the article on displacement. Spatulas.—Of these there are several kinds. The plain steelspatula, or palett
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectpharmacy, bookyear185
