136 



PRACTICAL PHYSIOLOGY 



CHAPTEE XXXVI. 

 RESPIRATION. 



Record of the Respiratory Movements in Man. A receiving tambour 

 the stethograph constructed like a drum (Fig. 117) is fastened by 



FIG. 117 Stcthograph. A, Metal drum ; B, hooks for tapes which pass round 

 neck ; C, rubber discs ; D, hooks for attaching tapes which are tied round thorax ; 

 E, tube leading to the recording tambour. 



Fio. 118. A stethograph employed to record the respiration and cardiac impulse 

 of the rabbit or cat. The tambours press on either side of the thorax. The T tube 

 leads to a recording tambour. 



tapes to the thorax. One tape passes round the thorax and the other 

 over the shoulder. The ' stethograph ' is connected with a recording 



