CONCEPCldN AND BULATAO : BlOOD PRESSURE.] 



[Phil. Journ. Sct., XI, B, No. 3. 



11 kii»wiww^ 



r-r-iH 



--/— r-* — /— » — f- 



Fig. 1. Record 1S4. Coincidence of the three criteria used 

 in reading systolic pressure. 



Fig. 2. Records 717 and 720. The first crosses nnarlc the points where the systolic 

 pressure is read — sudden increase in amplitude of oscillations. The second crosses 

 mark the points where diastolic pressure is read. 



Fig. 3. Record 190. The cross marks the point where 

 there is a marked increase in amplitude of oscillation 

 followed by marked separation of the limbs in the next 

 pulse wave. 



PLATE II. 



