64 (256) LITERATURE. 
1902. 
1905. 
1911: 
1900. 
1901. 
1900. 
1911. 
1903. 
1905. 
1901. 
A. NysTRöM. Über die Formenveränderungen des menschlichen 
Schädels und deren Ursachen. Arch. f. Anthropologie. Bd. 27. S. 230. 
R. PEARL. Variation and Correlation in brain-weight. Biometrika 
LVip S13: 
R. PEARL. Biometric Ideas and Methods in Biology. Scientia V. 10, 
Pp 401s 
K. Pearson. On the criterion that a given system of deviations 
from the Probable in the Case of a correlated system of variables is 
such that it can be reasonable supposed to have risen from Ran- 
dom Sampling. Philos. Magaz. Vol. 50. p. 157. 
K. PEARSON e. o. On the princip'e of Homoty posis and its re'ation 
to heredity to the variabi ity of the individual. and to that of the 
race. I. Phil. Trans. Ser. A. Vol. 197, p. 285. 
RIPLEY. The Races of Europe. London. 
T. TAMMES. Das Verhalten fluktuierend variierenden Merkmale bei 
der Bastardierung. Rec. d. trav. bot. néerl. Vol. 8 p. 206. 
E. TSCHEPOURKOWSsKY. Über die Vererburg des Kopfindex von 
Seiten der Mutter. Corr. bl. d. d. Ges. f. Anthrop., Ethn. u. Urgesch. 
34. Jhrg. S. 175 in Arch. f. Anthrop. 
E. TscHEPOURKOWSKY. Contributions to the study of interracial 
corre ation. Biometrika. V. 4. p. 286. 
Hueco DE Vries. Die Mutatioris theorie. Bd. I. Leipzig. 
