XIV 



LIST OF ILLUSTRATIONS. 



FIG. 



33. 



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Curves illustrating the effect of a rise of aortic pressure upon 



pressure in the right and left auricles (Kauders) 

 Effect of abdominal compression upon curve of aortic pressure . 



the 



of 



Cardiography tracing, illustrating effect on the volume of the heart 



alteration in position (Barnard) ..... 

 Posterior view of medulla oblongata of the cat (Laborde) 

 Reflex inhibition produced by inhalation of ammonia (Francois-Franek) 

 Dissection of the depressor nerve, rabbit (Ludwig and Cyon) 

 Aortic pressure. Excitation of depressor (Bayliss) 

 Aortic pressure and volume curve of limb (Bayliss) 

 Flow of fluid in cylindrical tubes ; piezometer . 

 Mode of determining velocity of flow (Nicolls) 

 Flow of fluid in branching tubes ..... 

 Weber's model, illustrating the principles of the circulation 

 Distribution of pressure and velocity during diastole and systole of the 



heart (Fredericq) ....... 



Apparatus for testing elasticity of arteries (Marey) 



Horizontal lines illustrating extension of artery under different 



pressures (Roy) ....... 



Effect of injection of saline solution on arterial, portal, and vena cava 



pressures (Bayliss and Starling) ..... 

 Poiseuille's htemodynamometer ..... 

 Hurthle's recording apparatus ..... 

 Hill and Barnard's sphygmometer .... 



Ludwig's stromuhr, as modified by Tigerstedt 

 Chauveau and Lortet's dromograph .... 



Dromograph tracing from carotid artery (Chauveau and Marey) 

 Tachogram ; arm elevated (v. Kries) .... 



Sphygmogram ; ,, (v. Kries) .... 



Tachogram ; arm dependent (v. Kries) .... 

 Sphygmogram ; ,, (v. Kries) .... 



Illustrating effect of change of posture on the circulation 

 Aortic pressure ; effect of posture . . . . • . 



„ and intracranial pressure ; effect of posture 



,, pressure ; effect of compression of abdomen, etc. (Hill and 



Barnard) ........ 



Aortic and vena cava pressures ; effect of posture, etc. (Hill and Barnard) 

 Scheme of the circulation (Hill and Barnard) 

 ,, wave passage along elastic tube 



ii ii ii )>•••• 



Section of the forearm passing through the l'adial sulcus (Hill, Barnard 



and Sequeira) . . . . . . 



Superficial view of the radial vessels (Hill, Barnard, and Sequeira) 

 Pulse tracings, showing effect of venous congestion (Hill, Barnard, and 



Sequeira) ........ 



Pulse tracings, showing effect of venous congestion (Hill, Barnard, and 



Sequeira) ........ 



Tracing, showing effect of occluding the brachial artery and the pulse 



(Hill, Barnard, and Sequeira) ..... 

 Velocity of pulse wave. Carotid and radial pulse (Edgren) 

 Experiment to show central origin of dicrotic wave (Grashey) . 

 Tracings illustrating the effect of inhalation of amyl nitrite upon the 



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110 



