Turning now to a second subject, designated as dog No. 3, the experiment with which lasted for nearly an entire year, the following general statements may be made. The animal was a small black and white fox terrier, weighing on July 6, 1905, 6.5 kilograms. It was a nervous, affectionate little creature, far less phlegmatic than the animal just described, always on the alert for a petting, and unceasingly active. For these reasons, it seemingly required per kilogram of body-weight a little more food than the preceding animal; a fact also in harmony with the general law that small animals, per unit of body-weight, need more food than larger ones. The diet made use of was of the same general character as employed with the preceding animal, and was changed from time to time to give requisite variety and to insure freedom from too great monotony. The accompanying table, showing daily averages during the twelve balance periods, gives all necessary information regarding the outcome of the experiment. SUBJECT No. 3. DAILY AVERAGES +----------------+-------+-----------------------+-----------------------+------+ | | | 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 | |July 18-July 28 | 6.8 | 5.88 | 0.84 | 79.0 | 5.58 | 0.43 | 0.05 |-0.18 | |Aug. 15-Aug. 24 | 7.1 | 3.44 | 0.49 | 77.4 | 3.35 | 0.17 | 0.13 |-0.21 | |Sept. 6-Sept. 15| 6.9 | 2.11 | 0.30 | 80.0 | 1.93 | 0.21 | 0.07 |-0.10 | |Oct. 8-Oct. 17 | 6.9 | 2.10 | 0.30 | 80.0 | 1.83 | 0.20 | 0.07 | 0 | |Nov. 22-Dec. 1 | 6.0 | 1.83 | 0.31 | 80.0 | 1.48 | 0.21 | 0.11 |+0.03 | | 1906 | | | | | | | | | |Jan. 2-Jan. 11 | 5.6 | 1.63 | 0.29 | 81.0 | 1.54 | 0.17 | 0.08 |-0.16 | |Jan. 30-Feb. 8 | 5.5 | 1.63 | 0.30 | 82.0 | 1.60 | 0.15 | 0.05 |-0.17 | |Feb. 27-Mar. 8 | 5.5 | 1.78 | 0.32 | 84.0 | 1.66 | 0.17 | 0.05 |-0.10 | |Mar. 27-Apr. 5 | 5.7 | 1.98 | 0.34 | 81.0 | 1.75 | 0.21 | 0.06 |-0.04 | |Apr. 24-May 3 | 5.7 | 1.98 | 0.34 | 83.0 | 1.68 | 0.13 | 0.13 |+0.04 | |May 22-May 31 | 5.8 | 1.98 | 0.34 | 80.0 | 1.77 | 0.13 | 0.11 |-0.03 | |June 17-June 26 | 6.0 | 1.98 | 0.33 | 77.0 | 1.53 | 0.21 | 0.07 |+0.17 |