THE RATE OF GROWTH 



in 



English tables. For Tables II. and III., I am in- 



o 



debted to my friend Professor Donaldson, of the 



TABLE II 



GROWTH OF ENGLISH BOYS 

 (Compiled by H. H. Donaldson) 



Yearly 

 Percentage 

 Increments. 



209.0 * 

 29.0 

 20.0 % 



9-7 * 



II. O* 

 12.0 

 10.0 * 

 10.0 % 



6.5* 

 7-1* 

 7-9* 

 II.OJJI 



II-7* 

 15-7* 

 10.0% 



4-9* 

 1-9* 

 2.3* 



1.2 % 



1.9* 

 .0* 

 .0* 



Wistar Institute in Philadelphia. 1 He finds in these 



1 Compare Donaldson, The Growth of the Brain, London, 1895, pp. 51 and 

 63. Professor Donaldson has had the kindness to revise his tables and allow 

 me to use them. They are given in the text. The following extract from his 

 letter of January 23, 1907, refers to the tables as herewith printed : 



" I shall be very glad to let you make any use of tables or diagrams in The 

 Growth of the rain, and, to facilitate this, I enclose the calculations for the 



