. A treatise on pharmacy for students and pharmacists. being applied. Ebul-lition is said to go on smoothly so long as this is continued, but bump-ing will commence as soon as the supply of air ceases. Another planwhich has been found very satisfactory, especially in the process ofdistillation, is the suction of air through the retort by means of anaspirator attached to the receiver. For the recovery of alcohol from weak percolates in the concentra-tion of vegetable solutions by distillation, special metallic stills havebeen devised. Those made of heavily-tinned copper, of one- to five-gallon
. A treatise on pharmacy for students and pharmacists. being applied. Ebul-lition is said to go on smoothly so long as this is continued, but bump-ing will commence as soon as the supply of air ceases. Another planwhich has been found very satisfactory, especially in the process ofdistillation, is the suction of air through the retort by means of anaspirator attached to the receiver. For the recovery of alcohol from weak percolates in the concentra-tion of vegetable solutions by distillation, special metallic stills havebeen devised. Those made of heavily-tinned copper, of one- to five-gallon capacity, will be found most desirable for pharmacists. , 166, 167, and 168 represent different styles of pharmaceutical SEP. 1 RATION OF I OLA TILE AT, 1 277:/.. 165 stills in use at the present time. Becks still (Fig. 16)), designedin 1893, is one of the best stills made for the concentration of weakpercolates and the recovery of alcohol. It is simple in construction,efficient iu condensing power, and easily cleaned. It is made of Becks pharmaceutical still. (Exterior view.) a (
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Keywords: ., bookcentury1800, bookdecade189, booksubjectpharmacy, bookyear1895
