BENEDICT APPARATUS, INCREASED DEAD SPACE. 211 



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FIG. 66. Type of respiration of subject T. M. C. without additional dead space on November 

 8, 1912. Upper curve, pneumograph record; lower curve, spirometer record. Original size. 



FIG. 67. Type of respiration of subject T. M. C. with 135 c.c. additional dead space on Novem- 

 ber 8, 1912. Upper curve, pneumograph record; lower curve, spirometer record. Original 

 size. 



FIG. 68. Type of respiration of subject P. F. J. without additional dead space on November 7, 

 1912. Upper curve, pneumograph record; lower curve, spirometer record. Original size. 



