26 



Prof. Karl Pearson. 



cerned, men start with a scarcely sensible advantage over women as 

 infants, and conclude as adults with an immensely less correlation than 

 women, among whom it appears to have slightly increased, or at any 

 rate not to have decreased. Until we have accurate numerical de- 

 terminations of the change in the correlation between organs with 

 growth, it is impossible to attempt to measure quantitatively the in- 

 fluence of a selective death-rate on growing living forms. We can 

 only deal with the influence of sudden selection on growing organisms, 

 or of long continued selection on adult life. 



(C). — On the Correlation between Stature, Weight, Strength, and Head Index 

 in the Case of Adults. 



4. The measurements upon which these results are based were 

 taken from cards in the possession of the Cambridge Anthropometrical 

 Committee, who kindly allowed me to have copies taken for 1000 cases 

 of male students, and for the whole series of female students, which 

 unfortunately were only about 160 in number.* The whole of the 

 lengthy arithmetic involved in the calculation of the constants was 

 undertaken by Miss C. D. Fawcett, B.Sc. The bulk of the students 

 were between nineteen and twenty-five years of age, although some few 

 were older ; they may be taken to represent adults, who in the great 

 majority of cases were in good physical health and training, and were 

 not troubled with the superfluous weight of a later period of life. 



I will first put in a separate table the results for weight and height, 

 in order that the constants for adults can be easily compared with 

 those for new-born infants. 



IV.— Weight and Height of Adults. 1000 Males, 160 Females. 



Females. . . . 



Mean. 



'Standard devia- 

 tion. 



Coefficient of 

 variation. 



Coeffi- 

 cient of 

 correla- 

 tion. 



Weight. 



Height. 



Weight. 



Height. 



Weight. 



Height. 



Weight 



with 

 Height. 



lbs. 

 125-605 

 =h 0-773 



ins. 

 63 -883 

 ±0 -130 



lbs. 

 14 -030 

 ±0-546 



ins. 

 2-361 

 ±0-092 



11 -170 



3-696 



0-721 

 ±0-026 





152-784 

 ±0-353 



68 -863 

 ±0-054 



16-547 

 ±0-250 



2-522 

 ±0*048 



10 -830 



3-662 



0-486 

 ±0 016 





* The establishment of an anthropometric laboratory at Newnham College will 

 soon increase this total. 



