The Pharmaceutical era . ated,which is technically known as theAssay. Among the more common reactionsgained by heating on charcoal are reduc-tions to the metallic state, the pro-duction of colored flames, vapors of different colors andotiors, incrustations, etc. Cutting and Bending of Glass Tubes.—Several feet ofglass tubing of small caliber will be required for thiswork. To cut glass tubes, make a scratch with a file atthe point where the cut is to be made, then taking it inboth hands, place the thumbs together over the place tobe broken, and pull outward and downward. The end of a tube may b
The Pharmaceutical era . ated,which is technically known as theAssay. Among the more common reactionsgained by heating on charcoal are reduc-tions to the metallic state, the pro-duction of colored flames, vapors of different colors andotiors, incrustations, etc. Cutting and Bending of Glass Tubes.—Several feet ofglass tubing of small caliber will be required for thiswork. To cut glass tubes, make a scratch with a file atthe point where the cut is to be made, then taking it inboth hands, place the thumbs together over the place tobe broken, and pull outward and downward. The end of a tube may be rounded by holding in aflame until the sharp edges are fused. By keeping inthe flame long enough the end may be entirely closed. To bend a tube, close one end with a cork, or putty,and heat for some, distance on either side of the placewhere the bend is to be made, turning it in the flame sothat it may be heated evenly. When the tube is softenough, hold it by one end and allow the other to sinkwith its own weight, or. iiiiture ofIlame.
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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1
