CONTENTS 
I. On the Systematic Fitting of Curves to Observations and Measurements 
(to be continued). (Seven Figures.) By Prof. Karl Pearson, F.R.S. 265 
II. Or^ the Sources of apparent Polymorphism in Plants, etc.-^ (Editorial.) 304 
(A) Variation in the number of Sepals in Anemone nemorosa. By 
G. Udny Yule . . . . . . . . . 30f 
(B) Variation in the Ray-flowers of Chrysanthemum leucanthemum L. 
at Yellow Springs, Ohio. By W. K Tower. (One Figure.) 309 
(C) Dr Ludwig on Variation and Correlation in Plants. By Miss 
Alice Lee, I).Sc . . 316 
(D) Note on Variation of Ray-flowers of Chrysanthemum leucanthe- 
mum L. from Keswick. By K. Pearson and G. U. Yule . 319 
III. On the Fundamental Conceptions of Biology. (Four Figures.) By 
Prof. Karl Pearson, F.R.S. . . 320 
IV. Data for the Problem of Evolution in Man. A second Study of the 
Variability and Correlation of the Hand. By Miss M. A. Lewenz, 
B.A., and Miss M. A. Whiteley. B.Sc 345 
V. ^n the Inheritance in Coat-Colour of Thoroughbred Horses (Grandsire 
and Grandchildren). By N. Blanchard, B.A. . . . . . 361 
VI. Professor de Vries on the Origin of Species. By Prof. W. F. R. 
Weldon, F.R.S. .......... 365 
Plate III (Figures 1 and 2). Embryos' of Fowl with modified 
Amnion. 
VII. On the 'Influence of Previous Vaccination in cases of Smallpox. 
By W. R. Macdonell, LL.D. 7 . . 375 
Miscellanea. Note on Local D§ath-Rates. By G. U. Yule . . . 384 
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. 
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Contributors receive 25 copies of their papers free. Fifty additional copies 
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be addressed to the University Press, Cambridge. 
The subscription price, payable in advance, is 30*. net per volume (post free); 
single numbers 10*. net. Subscriptions may be sent to Messrs C.'J. Clay & Sons, 
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