464 
Journal of Agricultural Research 
Vol. XI, No. 10 
(9) The maintenance requirement of the steer was increased 36 per 
cent by a 3 months’ fattening in which the live weight was increased by 
about 300 pounds. This increase was greater than corresponded to the 
increase in weight or in computed body surface. 
(10) The lower economic efficiency of the fattened animal in this 
experiment was due chiefly to his higher maintenance requirement and 
only to a small extent if at all to a difference in the utilization of the 
surplus of feed over the maintenance requirement. 
LITERATURE CITED 
(1) Armsby, H. P. 
1917. THE NUTRITION OR FARM ANIMALS. 743 p., 44 fig. New York. 
(2) - and Fries, J. A. 
1915. NET ENERGY VALUES OR REEDING STURRS ROR CATTLE. In JOUT. Agr. 
Research, v. 3, no. 6, p. 435-491, 2 fig. Literature cited, p. 489-491. 
( 3 ) - 
1911. THE INRLUENCE OR TYPE AND OR AGE UPON THE UTILIZATION OR REED BY 
cattle. U. S. Dept. Agr. Bur. Anim. Indus. Bui. 128, 245 p., 17 
%■, 3 pi- 
(4) - and Braman, W. W. 
1916. ENERGY VALUES OR RED-CLOVER HAY AND MAIZE MEAL. In Jour. Agr. 
Research, v. 7, no. 9, p. 379-387- 
(5) Fries, J. A. 
[1912] THE combustible GASES EXCRETED BY CATTLE. In Orig. Commun. 8th 
Internat. Cong. Appl. Chem., v. 15, p. 109-119. 
(6) Kellner, O., and Kohler, A. 
1898. Untersuchungen uber den nahrungs- und energie-bedarr voll- 
jahriger gEmasteter ochsen. In Landw. Vers. Stat., Bd. 50, Heft 
3/4, p- 245-296- 
(7) - 
1900. untersuchungen uber den storr- und energieumsatz des erwach- 
SEnen rindes bei erhaltungs- und produktionsrutter. Landw. 
Vers. Stat., Bd. 53, 474 p. 
( 8 ) Moulton, C. R, 
1917. THE AVAILABILITY OR THE ENERGY OR ROOD ROR GROWTH. In JoUT. Biol. 
Chem., v. 31, no. 2, p. 389-394. 
APPENDIX 
The principal numerical data obtained in the experiments are recorded 
in the following tables. The computations involved have been carried 
out beyond the probable limit of accuracy of the experimental methods 
in order to guard against a possible accumulation of arithmetical errors. 
COMPOSITION OF FEEDING STUFFS 
The alfalfa hay used was taken from a stock of cut hay prepared in 
1911-12 for an experiment of that year and again used in an experiment 
in 1912-13. The hay was old and rather hard, but was well eaten, except 
in period 3. Enough maize meal for two periods was freshly ground at 
the beginning of the first and third periods, respectively. The bran and 
cottonseed meal were purchased from the Dairy Husbandry Department. 
All the feeds were safely stored and protected from vermin. 
