Elements of chemistry ... / Translated from the German [by Henry Stutzer].

  • Joseph Franz von Jacquin
Date:
1803
Catalogue details

Licence: Public Domain Mark

Credit: Elements of chemistry ... / Translated from the German [by Henry Stutzer]. Source: Wellcome Collection.

    418/436 page 402
    gyropneumatic apparatus. The fabftance which comes over in the liquid form, is here, as in the former cafe, col]e8:ed in the balloon ; but the gazeous body paffes through the communicating tube into the hydro or hydrargyropneumatic apparatus, and rifes into the bell-glafs filled with water or mercury. By opening the fhort capillary tube of the communicating tube we fliall at all events prevent the tranfition of the water or mercury from the bell into the balloon. This compofition of Woulfe’s apparatus is frequently made ufe of in the analyfis of organized fubftances by dry diftillation. Third Cafe. If we know before-hand that the gazes to be obtained in a diftillation, befides the body in the liquid form, are two-fold, and that one is fo- luble in water the other not, the two gazes may be obtained feparately. To this end the apparatus is com* pofed exaftly in the fame manner as in the firft cafe; and a fecond bottle is moreover conneQed by means of the recurved communicating tube with the hydro- pneumatic veffel. The liquid body, in this cafe, as in the two former, comes over direfilly into the balloon, but the gazeous bodies rife through the communica- ting tube into the firft receiver, and from thence into the fecond. The foluble gaz is here abforbed by die water, and the infoluble gaz paffes through the bent communicating tube into the bell of the tube* The tube of fafety in the firft bottle indicates the pro- grefs of the operation, and prevents the tranfition of liie water into the balloon., but the capillary tube of
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