[115] A Discussion of Age Statistics, Rept. 13, Bull. Bur. Census, 1904.

[116] Life Insurance, N. Y., 1915.

[117] World Almanac, 1921, p. 438.

[118] Report of a Special Inquiry Relative to Aged and Dependent Persons in Massachusetts, 1915.

[119] The Elements of Vital Statistics, Lond., 1909, 326 pp.

[120] “Death Rate and Expectation of Life,” Science, vol. 43, 1916.

[121] Table of Mortality Statistics.

[122] “The Influence of Vital Statistics on Longevity.” Address at the sixth annual meeting of the Association of American Life Insurance Presidents, Dec., 1912.

[123] The Duration of Life and Conditions Associated with Longevity: A study of the Hyde genealogy (dealing with 8,797 persons) ending, for the most part, with the year 1825.

[124] “Who Shall Inherit Long Life?” Nat. Geog. Mag., June, 1919.