. 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 . Glass spirit lamp. Extemporaneous glass lamp. French hand furnace. wide mouth, may be used; a perforated cork with a small glass tubeabout an inch long is inserted in the neck of the bottle, as shownin Fig. 119, and the wick is made to pass through this into thealcohol contained in the bottle. A small tin alcohol lamp answers about as well as any for com-mon purposes, with the exception of having no cap to preventevaporation
. 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 . Glass spirit lamp. Extemporaneous glass lamp. French hand furnace. wide mouth, may be used; a perforated cork with a small glass tubeabout an inch long is inserted in the neck of the bottle, as shownin Fig. 119, and the wick is made to pass through this into thealcohol contained in the bottle. A small tin alcohol lamp answers about as well as any for com-mon purposes, with the exception of having no cap to preventevaporation from the wick; such a one is here figured, Figs. 121and 122, with a convenient stand in which to place it under a cap-sule or other vessel to be heated. Fig. 121. Fig;. Tin alcohol lamp and stand. Mitchells lamp. Another kind of alcohol lamp, familiar to all chemical students,is Mitchells argand lamp, shown in section in Fig. 123. In this,which is usually made of tin, an argand burner is placed in thecentre of a cylindrical reservoir, r, with which it communicates atbottom by small lateral tubes; the reservoir is furnished with atube near the top at a, for the introduction of the fluid; this isstopped with a cork having a slight perforation, so as to admit theair as the alcohol is consumed. The cylindrical wick, 6, which isinserted in the burner, is kept saturated with alcohol, owing to itscommunicating with the reservoir. When lighted at its upper edge,it burns freely, having a draft of air within as well as without thecylindrical column of flame, and generates a large amount of heat. HEAT FOR PHARMACEUTICAL PURPOSES. 137 When no longer wanted for use. the lamp should be covered bya cap over the burner, or emptied of alcohol, otherwise a greatwaste
Size: 2525px × 989px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectpharmacy, bookyear185
