46 



CIRCUMFERENCE OF CHEST AGE. 



attained its highest point at 20J or 21 years, after which it steadily diminished.' The 

 tables next to be given are not very definite in their results upon this point; but they 

 rather tend to sustain Hutchinson's views. 



It is certain that circumference of chest exhibits a very striking regularity in its 

 proo-ressive relation to age. The following tables show this connection, as well as the 

 relation of height to age, in the six nativities already instanced. 



Tables showing the relation of age to height, girth of chest, and expansion of chest. 



(a.) WHITE NATIVES OF THE UNITED STATES, C,359 MEN. 



Age. 



Number 

 of men 



Mean height. 



Mean girth of chest 

 at expiration. 



Mean expansion 

 of chest. 



Under 20 years 



20 and under 25 



25 and under 30 



30 and under 35 



35 and under 40 



40 and over 



Total, and mean of total 



1,632 



2,005 

 966 

 649 

 606 

 501 



Inches. 

 66. 494 

 67. 480 

 67. 538 

 67. 587 

 67. 799 

 67. 737 



6,359 



67. 297 



Metres. 

 1. 6890 

 1.7140 

 1.7155 

 1.7167 

 1. 7221 

 1.7205 



Inches. 

 31.321 

 32. 488 

 32. 940 

 33. 140 

 33. 297 

 33. 633 



1. 7093 



32. 491 



Metres. 

 .7956 

 .8252 

 .8367 

 .8418 

 .8457 

 .8543 



Inches. 

 3.261 

 3.253 

 3.224 

 3.223 

 3.256 

 3.181 



.8253 



3.242 



Metres. 

 .0828 

 .0826 

 .0819 

 .0819 

 .0827 

 .0808 



.0823 



(6.) COLOKED NATIVES OF THE UNITED STATES, 377 MEN. 



Age. 



Under 20 years 



20 and under 25 



25 and under 30 



30 and under 35 



35 and under 40 



40 and over 



Total, and mean of total 



Number 

 of men 



115 

 68 

 51 

 40 

 25 



377 



Mean height. 



Inches. 

 65. 564 

 66. 226 

 66.971 

 66. 588 

 67. 550 

 65.840 



66.387 



Metres. 

 1. 6653 

 1.6821 

 1.7011 

 1. 6913 

 1.7158 

 1. 6723 



1.6862 



Mean girth of chest 

 at expiration. 



Inches. 

 31. 641 

 32. 730 

 33. 265 

 33.294 

 33. 950 

 33.280 



32. 844 



Metres. 

 .8037 

 .8313 

 .8449 

 .8457 

 .8623 

 .8453 



.8342 



Mean expansion 

 of chest. 



Inches. 

 3.167 

 3.283 

 3.250 

 3.186 

 3.175 

 3.340 



3.232 



Metres. 

 .0804 

 .0834 

 .0826 

 .0809 

 .0806 

 .0848 



.0821 



(d.) ENGLISHMEN, 454 MEN. 



Age. 



Number 

 of men 



Mean^height. 



Mean girth of chest 

 at expiration. 



Mean expansion 

 of chest. 



Under 20 years 



20 and under 25 



25 and under 30 



30 and under 35 



35 and under 40 



40 and over .. 



Total, and mean of total 



46 



187 

 80 

 60 

 51 

 30 



Inches. 

 C6. 174 

 66. 278 

 66. 425 

 66.700 

 66. 275 

 66. 267 



454 



66. 348 



Metres. 

 1. 6808 

 1.6835 

 1.6872 

 1.6942 

 1. 6834 

 1. 6832 



Inches. 

 31. 522 

 32. 460 

 32. 975 

 33. 100 

 33. 529 

 33. 800 



1. 6852 



32. 749 



Metres. 

 .8007 

 .8245 

 .8376 

 .8407 

 .8516 

 .8585 



Inches. 

 3.261 

 3. 217 

 3. 138 

 3. 217 

 3.186 

 2. 967 



.8318 



3.187 



Metres. 

 .0828 

 .0817 

 .0797 

 .0817 

 .0809 

 .0754 



.0809 



'Op. ci<., p. 498. 



