Clinical lectures on the principles and practice of medicine . Fig. 13. Fig. 19. deserving of observation. The diameter of the trunk in various direc-tion-! is best ascei-tained by means of a pair of callipers. The amount of motion in the chest aud abdomen, and of its variousparts, is capable of being accurately determined by means of the chest-measurer of Dr. Sibson (Fig. 20), or the stethometer of Dr. Quain (). Both instruments are composed of a brass box, having a dial andan index, which is moved by a rack attached to a prolonged pinion or astring. Oue revolution of the index indicate
Clinical lectures on the principles and practice of medicine . Fig. 13. Fig. 19. deserving of observation. The diameter of the trunk in various direc-tion-! is best ascei-tained by means of a pair of callipers. The amount of motion in the chest aud abdomen, and of its variousparts, is capable of being accurately determined by means of the chest-measurer of Dr. Sibson (Fig. 20), or the stethometer of Dr. Quain (). Both instruments are composed of a brass box, having a dial andan index, which is moved by a rack attached to a prolonged pinion or astring. Oue revolution of the index indicates an inch of motion in thechest; the intervening space being graduated. It has been foundnecessaiy, when making observations on the respiratory movements,whether of the chest or of the abdomen, to divert the patients attention,and make him look straight forwards, otherwise these movements becomeso affected as to vitiate the results. The instruments may be applied inthe sitting or recumbent posture. The method of applying them with astring attached is shown i
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmedicine, bookyear187
