186 



COMPARISONS OF RESPIRATORY EXCHANGE. 



Table 31. — Respiratory exchange in comparison experiments with mouth-breathing and nose- 

 breathing — Tissot apparatus. (Without food.) 



Subject, date, method, 

 and time. 



o 



a' ■ 

 >> o-g 



K oo R 



O 



o3.g 



ft. a 



M 



a I 



B "S. 



Composition of 

 expired air. 



Carbon 

 dioxide. 



Oxygen 



J. K. M. 

 June 13, 1912: 

 Nosepieces: 



8 h 39 m a. m 



9 50 a. m 



10 43 a. m 



Average 



Mouthpiece: 



9 h 21 m a. m 



10 16 a. m 



11 10 a. m 

 Average 



June 18, 1912: 

 Nosepieces: 



8 h 5&n a. m 



9 45 a. m 



10 58 a. m 



Average 



Mouthpiece: 



9 h 22 m a. m 



10 17 a. m 



11 26 a. m 

 Average 



c.c. 



183 

 177 

 172 



177 



178 

 185 

 185 

 183 



177 

 175 

 169 



174 



178 

 173 

 189 

 180 



c.c. 



238 



227 



•217 



224 

 222 

 226 



241 

 233 

 231 



236 

 238 



247 

 240 



0.770 

 .775 

 .790 

 .780 



.795 

 .830 

 .820 

 .815 



.735 

 .750 

 .730 

 .740 



.755 

 .725 

 .765 



.750 



57.0 

 53.0 

 53.0 

 54.6 



56.5 

 57.5 

 54.5 

 56.0 



62.0 

 59.5 

 59.5 

 60.5 



61.5 

 61.0 

 60.5 

 61.0 



14.2 

 14.5 

 14.4 

 14.4 



13.8 

 14.7 

 13.7 

 14.1 



15.3 

 15.5 

 15.5 

 16. 4 



16.6 

 16.2 

 16.7 

 16.5 



liters. 

 4.52 

 4.40 

 4.38 

 4-43 



4.04 

 4.26 

 4.19 

 4- 16 



4.42 

 4.33 

 4.24 

 4. S3 



4.55 



4.59 

 4.83 

 4.66 



c.c. 

 389 

 371 

 372 

 377 



358 

 355 

 374 



353 

 341 

 334 



343 



335 

 346 

 354 



345 



p. ct. 

 4.08 

 4.04 

 3.95 

 4.02 



4.45 

 4.37 

 4.46 



4-43 



4.05 

 4.08 

 4.03 

 4.05 



3.94 

 3.79 

 3.93 



3.89 



■p. ct. 

 15.93 

 16.02 

 16.21 

 16.05 



15.62 

 15.91 

 15.74 



15.76 



15.78 

 15.84 

 15.79 

 15.80 



16.02 

 16.06 

 16.09 



16.06 



J. B. T. 



June 15, 1912: 

 Nosepieces: 



8 h 36 m a. m 



9 37 a. m 



10 30 a. m 



Average 



Mouthpiece: 



9 h 06 m a. m 



10 04 a. m 



11 00 a. m 

 Average 



193 

 203 

 195 

 197 



203 

 200 

 204 



255 

 260 

 257 



255 

 262 



275 



.755 



.780 

 .760 

 .765 



.800 

 .765 

 .745 

 .765 



69.0 

 67.5 

 62.5 

 66.5 



65.5 

 66.5 

 70.0 

 67.5 



13.4 

 13.9 

 15.8 

 14-4 



13.3 



11.8 

 15.9 

 13.7 



4.54 

 4.62 

 4.68 

 4. 61 



4.41 

 4.19 

 4.68 

 4-43 



409 

 401 

 357 



389 



400 

 428 

 355 



394 



4.28 

 4.42 

 4.20 

 4-30 



4.64 

 4.81 

 4.39 

 4. 61 



15.60 

 15.57 

 15.73 

 15.63 



15.41 

 15.00 

 15.39 

 15.27 



K. H. A. 

 June 19, 1912: 

 Nosepieces: 



9 h 04 m a. m 



9 59 a. m 



10 48 a. m 



Average 



Mouthpiece : 



9 h 33 m a. m 



10 25 a. m 



11 12 a. m 

 Average 



June 22, 1912: 

 Nosepieces: 



8 h 51 m a. m 



9 43 a. m 



10 39 a. m 



Average 



203 

 194 

 206 

 201 



201 

 205 

 211 



206 



206 

 193 

 213 



204 



271 

 249 

 266 



254 

 253 

 254 



254 



262 

 232 



248 

 247 



.745 

 .780 

 .775 

 .765 



.795 

 .810 

 .830 

 .810 



.785 

 .835 

 .860 



52.0 

 45.5 

 51.0 

 49.6 



50.0 

 50.0 

 50.0 

 50.0 



59.0 

 52.5 

 55.5 



55.5 



15.6 

 14.9 

 15.3 

 15.3 



13.3 



12.9 

 12.8 

 13.0 



15.0 

 15.9 

 15.9 

 15.6 



5.60 

 5.13 

 5.50 

 6.41 



4.41 

 5.11 

 5.14 

 4.89 



5.61 

 5.34 

 5.75 



5.67 



437 

 419 

 437 

 431 



403 



482 

 489 

 468 



450 

 404 

 435 



430 



3.65 

 3.81 

 3.78 

 3.75 



4.59 

 4.05 

 4.13 



4-26 



3.70 

 3.64 

 3.74 

 3.69 



16.35 

 16.31 

 16.33 



16.33 



15.43 

 16.17 

 16.17 

 15.92 



16.48 

 16.75 

 16.75 

 16.66 



