CONTENTS 
{All Rights reseHed) 
PAOB 
I. Results of Crossing Grey (House) Mice with Albinos. By E. H. J. 
ScHUSTEB, M.A. (With coloured Plate I.) • • ■ • • 1 
II. Biometrical Studies on Man. 1. Variation and Correlation in Brain- 
weight. By Raymond Pearl, Ph.D. (With twenty-three Diagrams 
in the text.) 13 
III. A Study of the Relations of the Brain to the Size of the Head. By 
Reginald J. Gladstone, M.D. (With Plates II and III and five 
Figures in the text.) . 105 
IV. On the Biometric Constants of English Brain -weights. By J. Blake- 
man, M.Sc, assisted by Alice Lee, D.Sc, and Karl Pearson, 
F.R.S. (With six Figures in the text.) 124 
V. A Quantitative Study of the Resemblance between Man and Woman. 
By E. Tschepourkowsky 161 
VI. " Das Fehlergesetz und seine Verallgemeinerungen durch Fechner und 
Pearson." A Rejoinder. By Karl Pearson, F.R.S. (With four 
Figures in the text.) . . . 169 
VII. Variation and Correlation in the Earthworm. By Raymond Pearl, 
Ph.D., and Wilbur N. Fuller. (With one Figure in the text.) . 213 
Miscellanea, (i) Per la. risoluzioue dalle curve dimorfiche. Nota del 
Dr Fernando de Helguero 230 
(ii) Albinism in Sicily. A further Correction. ByW. Bateson 231 
Biometrika will appear about four times a year. A volume containing 
about 400 pages, with plates and tables, will be issued annually. 
Papers for publication should be sent to Professor W. F. R. Weldon, 
Merton Lea, Oxford, to Professor Karl Pearson, 7, Well Road, Hampstead, 
London, or to Professor C. B. Davenport, University of Chicago, Illinois, U.S. 
It is very desirable that a copy of all measurements made, not necessarily 
for publication, should accompany each paper. In all cases the papers themselves 
should contain not only the calculated constants, but the distributions from 
which they have been deduced. Diagrams and drawings should be sent in a 
state suitable for direct photographic reproduction, and if on decimal paper it 
should be blue ruled. 
Papers will be accepted in German, French or Italian. In the first 
case the manuscript should be in Roman not German characters. 
Contributors receive 25 copies of their papers free. Twenty-five or fifty 
additional copies may be had on payment of 3/6 or 6/- respectively per sheet of 
eight pages: these should be ordered -when the final proof is returned. 
All communications, other than those relating to contributions, should 
be addressed to the University Press, Cambridge. 
The subscription price, payable in advance, is 80s. net per volume (post free); 
single numbers 10s. net. Volumes I, II and III (1902 — 4) complete, 30s. net 
per volume. Bound in Buckram 34/6 net per volume. Subscriptions may be 
sent to C. F. Clay, Manager, Cambridge University Press Warehouse, Fetter 
Lane, London, E.C., either direct or through any bookseller. 
