File:Injury, recovery, and death, in relation to conductivity and permeability (1922) (14596436048).jpg

Identifier: injuryrecoveryd00oste (find matches)
Title: Injury, recovery, and death, in relation to conductivity and permeability
Year: 1922 (1920s)
Authors: Osterhout, W. J. V. (Winthrop John Van Leuven), 1871-1964
Subjects: Physiology Electric conductivity Death (Biology)
Publisher: Philadelphia London : J.B. Lippincott Company
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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inum electrodes. and packed together, like a roll or coins,in, an apparatus which is shown in Fig. 3. It consistsof two platinum electrodes (covered with platinumblack), A, sealed into glass tubes, B, which are filled •This was developed without reference to the methods previouslyused and differs somewhat from them. *08terhout (1918, E), 24 INJURY, RECOVERY, AND DEATH with mercury and into which dip copper wires, C,which go to the Wheatstone bridge. These tubes arecontained in electrode holders of hard rubber, D,through which pass a rod, E, and a long screw, F^by means of which the electrode holders may be drawntoward each other and held firmly in any desired posi-
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Fig. 3.—Apparatus for determining the electrical conductivity of living tissue. The disks of tissue, L, are packed together like a roll of coins. At each end is a platinum electrode, A, fastened in an electrode carrier, D. By means of the screw, F, the electrode carriers can be drawn together, compressing the tissue and holding it firmly in place. tion. This screw engages an internal screw containedin the electrode holder at the right. This is not thecase with the electrode holder at the left in which the screwpasses through a sleeve, and in consequence this electrodeholder is drawn toward the other only when the block,M, is fastened in place by the set screw, N, and thescrew, F, is turned in the proper direction. An end view of an electrode holder, 7), is shown inFig. 4. Its lower portion (which contains the platinumelectrode) is shown inserted in a hard rubber support,(7. The support is pierced bv a series of seven holes MEASURING ELECTRICAL CONDUCTIVITY 25 (arranged in a circle a

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