148 Bibliography 
(154) Hatai, S. A Mathematical Treatment of some Biological Problems. Biol. Bull., 
Vol. XVIII, pp. 126—130. Philadelphia, 1910. 
(155) . The Mendelian Ratio and Blended Inheritance. Amer. Naturalist, Vol. xlv, 
pp. 99—106. New York, 1911. 
(156) . A Formula for Determining the Total Length of the Leopard Frog (R. Pipiens) for 
a Given Body Weight. Anat. Record, Vol. v, pp. 309-312. Philadelphia, 1911. 
(157) . An Interpretation of Growth Curves from a Dynamical Standpoint. Anat. 
Record, Vol. v, pp. 373—382. Philadelphia, 1911. 
(158) Hanschild, M. W. Untersuchung iiber die Pigmentation in Auge verschiedener Men- 
schenrassen und die Pigmentation in Saugetierauge uberhaupt. Zeitschr. f. Morph. 
u. Anthrop., Stuttgart, Bd. xn, S. 473—544. 1910. 
(159) Hegner, R. W. The origin and early history of the germ-cells in some Chrysomalid 
beetles. Jour, of Morph., Vol. xx, pp. 231—296. Philadelphia, 1909. 
(160) Helguero, F. de. Sulla Rappresentazione Analitica delle curve statistiche. Giorn. 
degli Econ., Ser. 2, Anno xx, pp. 241—265. Rome, 1909. 
(161) Hemmeter, J. C. Anthropometric studies of the osseous Proportions of the human 
Body, with a view to obtaining a mathematic expression for Enteroptosis. Internat. 
Beitrage z. Pathol, u. Therapie der Ernahrungsstorungen, Berlin, Bd. it, Heft 3. 
1910. 
(162) Heron, D. The influence of defective physique and unfavourable home environment on 
the intelligence of school children, being a statistical examination of the London 
County Council pioneer School Survey. Galton Eugenics Laboratory Memoir 
Series, viii. Dulau & Co., Ltd. 1910. 
(163) Heyer, A. Neue Untersuchungen liber die Langenvariation der Koniferennadeln. 
Berichte der Schweizerischen botanischen Gesellschaft, Heft xx, S. 247 — 253. Berne, 
1911. 
(164) Hill, J. A. Studies on Strength and Elasticity of the Wool Fiber. I. The Probable 
Error of the Mean. Paper from the Wool Laboratory of the Univ. of Wyoming 
Experimental Station. No. 1. Supplement to Twenty-first Annual Report. 
The problem discussed is the following : How many fibres must be tested in a 
given sample of wool in order that the average breaking strain and elasticity found 
for the tested fibres may represent satisfactorily the average for the whole sample ? 
(165) Hoggan, Frances. The American Negro and Race Blending. Sociological Review, 
Vol. II, pp. 349 — 360. London, 1909. (A very inadequate discussion of a great 
problem.) 
(166) Hort, E. C. and Penfold, W. J. A Critical Study of Experimental Fever. Proc. Roy. 
Soc, B, Vol. lxxxv, pp. 174—186. London, 1912. 
(167) Hrdlicka, A. Note sur la variation morphologique des Egyptiens depuis les temps pre- 
historiques ou predynastiques. Bull, de la Soc. d'Anthrop. de Paris, Serie v, T. X, 
pp. 143—144. Paris, 1909. 
(168) . Contribution to the Anthropology of Central and Smith Sound Eskimo. Anthrop. 
Papers of Amer. Mus. of Nat. Hist., Vol. v, pp. 177—280. New York, 1910. 
(169) . Human Dentition and Teeth from the Evolutionary and Racial Standpoint. The 
Dominion Dental Journal. 1911. 
The teeth of mankind to-day are compared with those of the earliest identi- 
fied human lower jaw, that of the "man of Heidelberg" ; also with those of the 
rather less ancient jaws of one of the cave men of ancient France and of the " man 
of Spy." The former differ in certain notable particulars from the human teeth 
