The book Physiology And Biochemistry in Modern Medicine was written by author Macleod, John James Rickard, 1876-1935 Here you can read free online of Physiology And Biochemistry in Modern Medicine book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Physiology And Biochemistry in Modern Medicine a good or bad book?
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This is accomplished by a nose clip, which consists of a V-shaped metal spring, the ends of which are pro- vided with felt pads. A toothed rachet is attached to the ends of the •This chapter is added for the convenience of workers in this subject. tCarpcntcr: Carnegie Institution of Washington Reports, No. 216, 1915. 554 Digitized by Google METHOD FOR DETERMINING RESPIRATORY EXCHANGE IN MAN 555 spring, and serves to hold the spring tightly clamped on the nostrils in the proper position (see Pig.... 177). Some individuals experience great distress when made to breathe through the mouth. For these it is best to use a face mask. Unfortu- nately at the present time no mask is entirely satisfactory. Perhaps the best is one sold by Siebe, Gorman & Co.,* which is pictured in the cut. Fig. 177. — A, Nose clip; B, Face mask; C, Mouth piece. After being placed in position the face mask should be tested for leaks, which can be done by putting soap around the edges. 2. The Valves. — The valves of Tissdt are probably the best for the purpose, but they are expensive and difficult to obtain.
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