522 Dr. A. D. Waller. Various Inclinations of the [Mar. 6, 





Pulse 

 frequency. 



Transverse. 



K. lat. 



L. lat. 



a. 





66 



146-126 

 98-96 



Insp. Exp. 

 10 11 



7-5 12-5 

 10 15 



Insp. Exp. 

 13 15 



12 14 



13 15 



Insp. Exp. 

 7 5 



10 5 

 9 5 



Insp. Exp. 

 31= 45° 



10° 44° 

 20' 45° 



Immediately after exertion, 



2000 kgrm. in 35 sees 



Two or three minutes later... 





Pulse frequency. 



E. 



L. 



a. 



Normal 



96 to 86 



120 

 104 



72 



11 



12 -5 

 14 



12 -5 



2-5 

 Exp. Insp. 

 5 to 10 

 3 „ 5 



2-5 



52° 

 Exp. Insp. 

 4L° to 12° 



52° ,. 43° 

 53° 



Second minute 



Fifth minute 



Thirtieth minute . . . 



The inferior angle a is diminished in consequence of muscular exertion. 



8. The Influence of Food. 



From measurements taken on the same individual before and after food, 

 the angle a has come out greater in the latter than in the former state. But 

 the numerical estimation of this difference cannot be discussed with profit 

 apart from the consideration of the respiratory variations of angle. In the 

 case of B. 0. B. the difference has come out = 10°, the actual measurements 

 having been as under : — 





Pulse 

 frequency. 



Transverse. 



K, lat. 



L. lat. 



tan a. 



a. 



Before dinner 



62 

 70 



11 



12 -5 



12 -5 

 12 5 



6 



4 



0-70 

 1 -02 



35° 

 45° 







The left lateral is smaller with a full stomach. 

 The right lateral is not appreciably altered. 

 The transverse is increased. 

 The angle a is increased. 



9. Thoracic Leads. 



The preceding considerations dealing with leads from the mouth and 

 extremities apply to the current-axis in the frontal plane. Similar con- 

 siderations can be applied for measurement of the current-axis in the 

 antero-posterior (sagittal) plane, and we may calculate superior and inferior 

 values of a by the same formulae as those taken for their values in the 

 frontal plane. 



