properly taught, but of course in different degree.

[167] Seashore, C. E., in _Psychol. Monogs,_ XIII, No. 1, pp. 21-60,
Dec., 1910. See also Fletcher-Copp, _ubi sup._ Mrs. Copp declares that
the gift of "positive pitch" or "absolute pitch," i. e., the ability to
name any sound that is heard, "may be acquired, speaking very
conservatively, by 80% of normal children," if they begin at an early
age. It may be that this discrepancy with Seashore's careful laboratory
tests is due to the fact that the pupils and teachers trained by Mrs.
Copp are a selected lot, to start with.

[168] The contributions on this subject are very widely scattered
through periodical literature. The most important is Karl Pearson's
memoir (1914), reviewed in the _Journal of Heredity_, VI, pp. 332-336,
July, 1915. See also Gini, Corrado, "The Superiority of the Eldest,"
_Journal of Heredity_, VI, 37-39, Jan., 1915.

[169] _Journal of Heredity_, VIII, pp. 299-302, July, 1917.

[170] _Biometrika_, IV, pp. 233-286, London, 1905.

[171] See, for example, _Journal of Heredity_, VIII, pp. 394-396,
September, 1917. A large body of evidence from European sources, bearing
on the relation between various characters of the offspring, and the age
of the parents, was brought together by Corrado Gini in Vol. II,
_Problems in Eugenics_ (London, 1913).

[172] Davenport, Charles B., "The Personality, Heredity and Work of
Charles Otis Whitman," _American Naturalist_, LI, pp. 5-30, Jan., 1917.

[173] Gillette, John M., _Constructive Rural Sociology_, p. 89, New
York, 1916.

[174] Cook, O. F., "Eugenics and Agriculture," _Journal of Heredity_,
VII, pp. 249-254, June, 1916.

[175] Gillette, John M., "A Study in Social Dynamics: A Statistical
Determination of the Rate of Natural Increase and of the Factors
Accounting for the Increase of Population in the United States,"
_Quarterly Publications of the American Statistical Association,_ n. s.
116, Vol. XV, pp. 345-380, December, 1916.

[176] The popular demand for "equality of opportunity" is, if taken
literally, absurd, in the light of the provable inequality of abilities.
What is wanted is more correctly defined as an equal consideration of
all with an _appropriate_ opportunity for each based on his demonstrated
capacities.

[177] _Essays in Social Justice._ By Thomas Nixon Carver, Harvard
University Press, 1915, pp. 168-169.

[178] Answering the question "How Much is a Man Worth?" Professor Carver
state