182 
Journal of Agricultural Research 
Vol.lX, No. 6 
(12) Increased atmospheric temperature and increased percentage of 
humidity lead to increased body temperature. 
(13) Blood examinations of pigs which are to be used for clinical rec¬ 
ords should be taken from animals which have been confined in a small 
cool pen for at least-24 hours, and better, 48 hours. The animals must 
be kept absolutely quiet and not worried. Feeding and watering should 
be regular. The daily blood examinations should be made at the same 
time on each day. 
(14) Temperature records which are to be used for clinical records 
should be taken from pigs kept in a cool, shady pen. The ani¬ 
mals should not be exercised or worried when the temperatures are 
taken. If the animals are chased around the pen in endeavoring to 
obtain the temperature, the last temperatures taken may show a 
marked rise. For tuberculin work where the temperatures are used it 
would be best to keep them confined in a crate throughout the test. 
(15) The condition of the animal (amount of fat), the temperature of 
the atmosphere, and the percentage of humidity are factors which should 
be'considered in determining the noftial temperature of the pig. 
literature CITED 
(1) American Medicab Association. 
1916. The real meaning of fresh air. In Jour. Amer. Med. Assoc., v*. 67, no. 
14, p. 1022-1023. 
Cites papers by Lee and Haldane. 
(2) Boothby, W. M., and Berry, F. B. 
1915. The effect of work on the percentage of haemoglobin and number of red 
corpuscles in the blood. In Amer.* Join*. Physiol., v. 37, no. 2, .p. 
378-382. 
Cites (p. 378) papers by Tomow and Hasselbalch and Heyerdahl. 
(3) Burnett, S. H. 
1908. The Clinical Pathology of the Blood of Domesticated Animals. 156 p. * 
24 fig., 4 col. pi. Ithaca, N. Y. 
References at end of each chapter. 
Cites (p. 69) paper by Larrabee. 
(4) Gruner, O. C. 
1913. Biology of the Blood Cells. . . 404 p., illus. London. 
(5) Hawk, P. B. t 
1904. On the morphological changes in the blood after muscular exercise. In 
Amer, Jour. Physiol., v. 10, no. 7, p. 384-400. 
Cites (p. 385) papers by Willebrand and Larrabee; (p. 386) papers 
by Zuntz and Schumberg, and Cohnstein and Zuntz. 
(6) Jones, E. L. 
1887. On the variations in the specific.gravity of the blood in health,. In 
Jour. Physiol., v. 8, no. 1, p. 1-14, pi. 1. 
(7) Schneider, E. C., and Havens, L. C. 
1915. Changes in the blood after muscular activity and during training. In 
Amer. Jour. Physiol., v. 36, no. 3, p. 239-259, 2 fig. Bibliography, 
p.251. 
Cites papers by Zuntz and Schumberg, and (p. 241) Burrows. 
(8) Schroeder, E. C., and Mohler, J. R. 
1906. The tuberculin test of hogs and some methods of their infection with 
tuberculosis. U. S. Dept. Agr. Bur. Anim. Indus. Bui. 88, 51 p. 
