212 
Notices and Bibliography 
Morgan, T. H. The Assumed Parity of the Germ Cells in Mendelian Results. Science, N. S., 
Vol. XXII, pp. 877—879. 1905. 
An attempt to interpret cei-tain of Cuenot's recent results on mice. Questions "the 
assumjition of the so-called purity of the germ cells, by means of which modern writers are 
explaining the Mendelian results." 
MuiiFORD, F. B. Influence of Size of Parent on Birth-weight. Amer. Breeders' Assoc. Proc. 
Vol. I, pp. 73—76. 1905. 
Abstract of the results of a quantitative investigation on sheep to determine the factors 
which influence the size and weight of the young at birth. 
Pe.\rl, E. a Note on the Calculation of Certain Probable Errors. Science, N. S., Vol. xxii, 
l)p. 802 & 803. 1905. 
Notes a simpliticati(.)n in the calculation of the probable errors of the analytical constants 
of the normal cur\ e. 
Robinson, B. Length of the Enteron (Small Intestine). Medical Record, Aug. 12, 1905. 
Reports the results of autopsy measurements of the length of the small intestine in 
450 males and 150 females. Finds great variation. Mean length 4 feet greater in $ than in $ . 
Ross, R. The Logical Basis of the Sanitary Policy of Mosquito Reduction. Science, N. S., 
Vol. XXII, pp. 690- 699. 1905. 
Discusses the problem of the local geographical distribution of Mosquitos from the 
standpoint of the matlieinatical theory of probability. 
Spillm.\xn, W. J. Mendel's Law in Relation to Animal Breeding. Amer. Breeders' Assoc. 
Proc. Vol. I, pp. 171—177. 1905. 
Discusses the Mendelian inheritance of horned and polled condition in cattle. 
SriiJ.M.\NN, W. C4. A Mendelian Character in Cattle. Science, N. S., Vol. xxiii, pp. 549 — 551. 
1906. 
The author i)resents data regarding the progeny got by polled Hereford bulls crossed 
with polled and horned cows. Concludes that it is "highly probable that the polled 
character is a dominant Mendelian unit character." 
Thorxdike, E. L. An Empirical Study of College Entrance Examinations. Science, N. S., 
Vol. xxiii, pp. 839—845. 1906. 
A study of the correlation between entrance examination marks, and the marks obtained 
by the same students in the later college work. The correlations are generally low. 
Wentworth, a. H. a Study of the Metabolism of Atrophic Infants and Children. Joui'n. 
Amer. Med. Assoc. Vol. xlv, pp. 771 — 779. 1905. 
Grives the weight in grams of an infant on each day for a period of three and a half 
months. 
Wilson, E. B. Mendelian Inheritance and the Purity of the Gametes. Science, N. S., Vol. xxiii, 
pp. 112 & 113. 1906. 
A critical discussion of Morgan's (1905) paper. 
WissLER, C. The Spearman Correlation Formula. Science, N. S , Vol. xxii, pp. 309 — 311. 1905. 
A destructive criticism of Spearman's method of determining correlations. See 
Bionwtrika, Vol. in, p. 160. 
"Woi.TERSTORFF, W. Triton blasii und die Mendel'schen Regeln. C.R. 6'"'^ Congr. internat. 
Zool. Berne, pp. 255—258. 1905. 
Yerkes, R. M. & Urban, F. M. Sex Differences in the Estimation of Time. Science, N. S., 
Vol. XXII, pp. 843 & 844. 1905. 
A preliminary report. The authors find that females tend to overestimate time in- 
tervals. Females are markedly more variable in time judgments than males. 
R. P. 
