INDEX 383 HOLMAN, S. 246, 247, (1) On the Effect of Temperature on the Viscosity of the Air. Proc. Am. Acad. 12, 41 (1876); 10 pp.; (2) A New Method of Studying the Relation between the Viscosity and Temperature of Gases. Phil Mag. (5) 3,81 (1877); 6 pp.; (3) On the Effect of Tempera- ture on the Viscosity of the Air. Proc. Am. Acad. 21, 1 (1885); (4) On the Effect of Temperature on the Viscosity of Air and Carbon Dioxide. *Phil. Mag. (5) 21, 199 (1886); 24 pp. HOLMGREN, I. The Influence of White Blood Corpuscles upon the Viscosity of the Blood. Deut. Med. Wochschr. 39, 217 (1913); 2 pp. HONDA, K. and KONNO, S. On the Determination of the Coefficient of Normal Viscosity of Metals. Phil. Mag. 42 (6) 115 (1921); 8pp. HOEIBA. J. Tok. Chem. Soc. 31, 922 (191 ). HORTON, F. 237, The Effects of Changes of Temperature on the Modulus of Torsional Rigidity of Metal Wires. Phil. Trans. London (A) 204, 1 (1904); 55 pp. HOSKING, R. 6, (1) Viscosity of Solutions. Phil. Mag. (5) 49, 274 (1900); 13 pp. Cp. Lyle & Hosking; (2) The Electrical Conductivity and Fluidity of Solutions of Lithium Chloride. Phil. Mag. (6) 7, 469 (1904); 29 pp.; (3) The Viscosity of Water. J. Proc. Roy. Soc. N. S. W. 42, 34 (1909); 23 pp. Do., do. 43, 34 (1910); 5 pp. HOUBA. Over de strooming van vloeistoffen door buizen. Nijmegen (1883). Cp. Wied. Ann. 21, 493 (1884). HOTJDAILLE, F. Mesure du coefficient de diffusion de la vapeur d'eau dans 1'atmosphere et du coefficient de frottement de la vapor d'eau. Th6se Paris (1896); Fortsch. Physik. (I) 62, 442 (1896); 1 p. HOWARD, W. B. Penetration Needle Apparatus for Testing the Viscosity of Asphalt. U. S. Pat. 1,225,438, May 8 (1917). HOWEL and COOKB. Action of the Inorganic Salts, of Serum, Milk, Gastric Juice, etc., upon the Isolated Heart, etc. J. of Physiol. 14, 198 (1893). HUBBARD, P. & REEVE, C. Methods for the Examination of Bituminous Road Materials. U. S. Dept. Agric. Bull. No. 314. Cp. also Eng. Contr. 54, 16 (1920); 4 p. HtJBENER, T. 178, 179, Untersuchungen liber die Transpiration von Salz- losungen. Pogg. Ann. 160, 248 (1873); 12 pp. HUBNER, W. 286, Die Viscositat des Blutes. Bemerkungen zu der gleich- namigen Arbeit von C. Beck. u. C. Hirsch. Arch. f. exp. Path. u. Pharm. 64, 149 (1905). HURTHLE, K. (1) t)ber den Widerstand der Blutbahn. Deutsch. med. Wochschr. 23, #51, 809 (1897); 3 pp.; (2) Do. Arch. ges. Physiol. (Pflxiger's) 82, 415 (1908); 3 pp. HUMPHREY, E. and HATSCHEK, E. The Viscosity of Suspensions of Rigid Particles at Different Rates of Shear. Proc. Phys. Soc..London 28, 274 (1916). HTJRST. Lubricating Oils, Fats, and Waxes. 3d Ed. (1911). HuTCHiNsoisr, J. Viscometer for Use with Coal-Tar, etc. Brit. Pat. 22,042, Oct. 6 (1911).