Title: Analyses of waters of the Yellowstone National Park : with an account of the methods of analysis employed
Identifier: analysesofwaters00gooc (find matches)
Year: 1888 (1880s)
Authors: Gooch, Frank Austin, 1852-1929; Whitfield, James Edward, 1859-1930
Subjects: Water; Mineral waters
Publisher: Washington : Govt. Print. Off.
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

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16 WATERS OF YELLOWSTONE NATIONAL PARK. (BULL. 47. them, the other serving to protect the weighed tube from the action of the external air. Through the rubber stopper of the flask passed the tube of a separating funnel, the end of the condensing tube, and a tube which connected the interior of the flask with the system of bottles and scrubbing tower, which furnished at will and under slight pressure a supply of dry air free from carbonic acid.
Text Appearing After Image:
Fig. 1.—Apparatus for the estimation of carbonic acid. Before beginning the operation of determining the carbonic acid in a water the atmospheric air was expelled from the apparatus and replaced by pure air free from carbonic acid. The stop-cock in the funnel tube and the connection with the aspirator having been closed, the water started through the cooler, and the joint broken between the potash bulbs and the drying tube immediately preceding it, a few cubic centi- meters of distilled water were put into the flask and boiled. The steam generated drove the air from the flask, and that remaining in the tubes was swept forward by pure air admitted from the aspirator. The outer opening of the tube at the end of the line was closed, the source of heat removed, and the flask allowed to fill with air from the aspirator. The whole apparatus having been filled thus with air free from carbonic acid, the water to be examined—we found 200 g. to be a convenient amount— was introduced into the flask through the funnel tube and followed by a little boiled water and a sufficiency of sulphuric acid, care being taken to exclude the outer air during the operation. The connection between the line of drying tubes and the absorption bulbs was re-established, the liquid in the flask was brought to the boiling point, and, to secure con- stant and quiet ebullition as well as to aid in transferring the carbonic acid from the flask to the absorption bulbs, a current of pure air was (16)

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