PHYSIOLOGY OF MOUTH-BREATHING APPLIANCES. 



189 



TABLE 51. Respiration-rate and rate of pulmonary ventilation (unreduced) in grade-walking experiments without 

 food, for studying effect of long and short duration of preliminary mouthpiece breathing. Subject, E. D. B., 

 30 per cent grade, at approximately 50 meters. (Values per minute.) Continued. 



