. 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 . on; it, however, requires to be used in connection withan open or wide mouth receiving vessel or a funnel, otherwise theliquid might not be perfectly collected as it passes downwards. In filtering very volatile liquids, particularly in hot weather, somecontrivance must be resorted to, to prevent evaporation from thewide surface exposed, while, at the same time, the escape of airfrom the receiving vessel must be provided for.
. 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 . on; it, however, requires to be used in connection withan open or wide mouth receiving vessel or a funnel, otherwise theliquid might not be perfectly collected as it passes downwards. In filtering very volatile liquids, particularly in hot weather, somecontrivance must be resorted to, to prevent evaporation from thewide surface exposed, while, at the same time, the escape of airfrom the receiving vessel must be provided for. The drawing heregiven, Fig. 97, from Mohr & Eedwood, represents an arrangementof the kind. The glass funnel is fitted by a cork into the receivingvessel; its top is ground to a smooth surface, on which is laid aplate of glass, c; a little simple cerate will furnish a good luting;&, is a very small glass tube laid down the inside of the funnel be-tween it and the filter, and so twisted at its lower end as to be sup-ported in its place; this forms a connection between the air belowand that above the liquid, without allowing any evaporation. Fig. 97. Fig.
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectpharmacy, bookyear185
