File:Operative gynecology - (1906) (14783079532).jpg

Identifier: operativegynecol001kell (find matches)
Title: Operative gynecology :
Year: 1906 (1900s)
Authors: Kelly, Howard A. (Howard Atwood), 1858-1943
Subjects: Gynecology Gynecology Gynecologic Surgical Procedures
Publisher: New York and London : D. Appleton and company
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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loosely packed in the bottom. During the drying processthe beaker glass is covered with a sheet of pasteboard, through which a centi-grade thermometer is thrust, so that the mercury bulb may be suspended about midway in the vessel. Inthis way the temperaturecan be perfectly regulated.A Bunsen burner is placedunder the sand bath and thetemperature in the beakerglass is slowly brought up to80° C, where it is held forone hour to dry the catgut.A higher temperature than100° C, before the catgutis thoroughly dry, rendersit brittle; this step in themethod must be carried outmost carefully. When thedrying process is completedthe cumol is poured into thebeaker glass and brought upto a temperature of 165° C,a little short of the boil-ing point, with two Bunsenburners. A copper-wire net-ting should be placed overthe beaker glass to preventthe ignition of the cumol.This temperature is morethan sufficient to kill allmicro-organisms, and it isnot desirable to allow thecumol to boil, as boiling
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Fig. 11.—J. G. Clarks Cumol Sterilizer. E, tap for removing cumol from cylinder; F, funnel throughwhich cumol is poured into cylinder; G, glass tube connectedabove and below with cylinder to show the amount of cumol;S, sand between outer and inner vessels; V, vent. causes unnecessary evapora-tion. The catgut is leftfor one hour at this temperature, when the cumol is poured off for subse-quent use. Cumol, which is of a clear, limpid, slightly yellowish appearance whenprocured from the chemist, is changed to a brownish color by boiling. The catgut is allowed to remain in the sand bath until the excess of cumol PREPARATION OF CATGUT. 17 is driven off and it appears entirely free from any oily matter. A period ofone to two hours is usually sufficient to dry it thoroughly. From the sand bath or hot-air oven it is transferred with sterile forceps tosterile test tubes, such as are used for culture media, in which it is preservedfrom contamination until ready for use. Small quantities shoul

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