+---------------+-------+-----------------------+-----------------------+------+ | | | Food. | Output. | | | | +------+-------+--------+-------+-------+-------+ | | | Body- | |Nitro- | Fuel | Nitro-| Nitro-| Nitro-|Nitro-| | Date. |weight.|Total |gen per| Value | gen | gen | gen | gen | | | |Nitro-| Kilo |per Kilo|through|through|through| Bal- | | | | gen. | Body- | Body- | Kid- |Excre- | Hair. | ance | | | | |weight.| weight.| neys. | ment. | |+ or -| +---------------+-------+------+-------+--------+-------+-------+-------+------+ | 1905 | kilos | grams| gram |calories| grams | gram | gram | gram | |Sept. 24-Oct. 3| 14.0 | 7.22 | 0.52 | 86.0 | 6.40 | 0.71 | 0.19 |-0.08 | |Nov. 5-Nov. 14 | 13.0 | 4.78 | 0.35 | 80.0 | 4.29 | 0.37 | 0.25 |-0.13 | |Dec. 19-Dec. 28| 13.4 | 3.70 | 0.27 | 72.0 | 2.86 | 0.49 | 0.13 |+0.22 | | 1906 | | | | | | | | | |Jan. 16-Jan. 25| 14.1 | 3.72 | 0.26 | 70.0 | 3.16 | 0.61 | 0.16 |-0.21 | |Feb. 13-Feb. 22| 14.3 | 4.26 | 0.30 | 78.0 | 3.54 | 0.67 | 0.37 |-0.32 | |Mar. 13-Mar. 22| 14.1 | 3.62 | 0.26 | 55.0 | 3.29 | 0.46 | 0.14 |-0.27 | |Apr. 10-Apr. 19| 14.2 | 4.59 | 0.32 | 73.0 | 2.84 | 0.51 | 0.10 |+1.14 | |May 8-May 17 | 14.2 | 4.59 | 0.32 | 71.0 | 3.56 | 0.48 | 0.18 |+0.37 | |June 5-June 14 | 15.3 | 4.58 | 0.30 | 66.0 | 2.98 | 0.55 | 0.28 |+0.77 | +---------------+-------+------+-------+--------+-------+-------+-------+------+ [Illustration: _Subject No. 13._ _January 2, 1906_] [Illustration: _Subject No. 13._ _February 27, 1906_] [Illustration: _Subject No. 13._ _April 24, 1906_] [Illustration: _Subject No. 13._ _June 19, 1906_] Results of the same general tenor with dogs No. 15 and No. 20 are seen in the appended tables, while the accompanying photographs testify clearly to the general good condition of the animals up to the end of the experiments. In No. 20 particularly, the great gain in body-weight is to be noted, even though the fuel value of the food was reduced as low as 64 calories per kilo, with the nitrogen intake at 0.28 gram per kilo daily. Plainly, the day’s food could have been diminished still more, with perfect safety to both body and nitrogen equilibrium. SUBJECT No. 15. DAILY AVERAGES