Carbon Dioxide. 



443 



In all the fasting experiments recently made in the laboratory of Wesleyan 

 University and here reported, the carbon dioxide was determined not only for 

 the 24 hours but for each 2- or 3-hour period throughout the experiments. 

 The details of the determinations for the shorter periods are given in con- 

 nection with the statistical tables in the preceding section. The total quan- 

 tities of carbon dioxide eliminated per day are shown in table 222. 



Table 222. Carbon dioxide eliminated in metabolism experiments without food. 



Exper- 

 iment 

 num- 

 ber. 



Subject and duration of 

 experiment. 



First 

 day. 



Second Third Fourth Fifth 

 day. day. day. day. 



Sixth 

 day. 



Seventh 

 day. 



59.. 

 68.. 

 69.. 

 71.. 

 73.. 

 75.. 

 77.. 

 79.. 

 80.. 

 81.. 

 82.. 

 83.. 

 85.. 

 89.. 



B.F.D., 



A.L.L., 



A.L.L., 



S.A.B., 



S.A.B., 



S.A.B., 



S.A.B., 



H.E.S., 



C.R.Y., 



A.H.M., 



H.C.K., 



H.R.D., 



N.M.P., 



D. W.. 



Dec. 



Apr. 



Dec. 



Jan. 



Jan. 



Mar. 



Apr. 



Oct. 



Oct. 



Nov. 



Nov. 



Dec. 



Dec. 



Jan. 



18 to 



27 to 

 16 to 



7 to 



28 to 



4 to 



8 to 

 13 to 

 27 to 

 21 to 

 24 to 



5 to 



9 to 

 10 to 



20, 1908..., 



28, 1904 



19, 1904... 



10, 1905 



Feb. 1, 1905, 



10, 1905..., 



11, 1905 



14, 1905. .. 



28, 1905... 



22, 1905 



25, 1905... 



K, 1905 



10, 1905... 



11, 1906... 



Average 



Oms. 

 670.6 

 694.4 

 631.8 

 669.0 

 608.9 

 569.9 

 599.5 

 632.0 

 627.4 

 534.7 

 740.9 

 606.7 

 696 . 6 

 722.4 



Oms. 

 658.9 

 679.3 

 666.4 

 |570.2 

 1560.0 

 1550.6 

 [576.9 

 635.2 

 |640.3 

 ,524.3 

 767.3 

 579.2 

 719.3 

 705.5 



Oms. 

 650.2 



640.7 

 554.0 

 541.7 

 ,545.1 

 556.6 



643.2 



631.0 



581.4 



Oms. 



612 

 508 

 515 

 534 

 544 



543 . 



Oms 



482 

 496 



489 . 2 



Oms 



477 



477 



Oms 



475 



475.6 



Considerable variations occur in the amounts of carbon dioxide produced on 

 the different fasting days of these experiments. As the fast progresses, the 

 amounts eliminated generally become less and less. The total amounts for the 

 first day of fasting varied from 535 grams in experiment No. 81 to 741 grams 

 in experiment No. 82, the average on the first day for the 14 experiments being 

 643 grams. On the second day the fluctuations are even greater, the smallest 

 amount (524 grams) being measured in experiment No. 81, the largest, in 

 experiment No. 82 (767 grams). The average for the second day in the 14 

 experiments is 631 grams. The much smaller number of experiments which 

 continued 3 days affects in marked degree the average for the third day, which 

 diminishes to 581 grams. The variations range from 542 to 650 grams. The 

 variations on the fourth day range from 508 to 613, the average being 543 

 grams. The carbon dioxide production in experiments Nos. 73 and 75 was 

 nearly identical on the fifth day. The average, 489 grams, is somewhat higher 

 than the amounts excreted on the sixth and seventh days of experiment No. 75. 



If the longer experiments with S. A. B. be examined more specifically, it 

 will be found that the carbon dioxide elimination decreased regularly in all 

 cases as the fast progressed. 



