208 



COMPARISONS OF RESPIRATORY EXCHANGE. 



Fig. 59. — Type of respiration of subject W. F. O'H. in the third period with additional 

 dead space on October 27, 1912. Original size. 



Fio. 60. — Type of respiration of subject W. F. O'H. at the end of the third period 

 without additional dead space on October 27, 1912. Original size. 



Fig. 61— Type of respiration of subject W. F. O'H. in the early part of the second period withou t 

 additional dead space on October 27, 1912. Original size. 



Fig. 62. — Type of respiration of subject W. F. O'H. at the beginning of the fourth period without 

 additional dead space on October 27, 1912. Original size. 



