Ill] OF PARTS OR ORGANS 89 



and also the percentage relation which each of these organs bears, 

 at the several ages, to the weight of the whole body. 



Weight of Various Organs, compared with the Total Weight of 

 the Human Body (male). {After Vierordt, Anatorn. Tabellen, 

 pp. 38, 39.) 



From the first portion of the table, it will be seen that none 

 of these organs by any means keep pace with the body as a whole 

 in regard to growth in weight; in other words, there must be 

 some other part of the fabric, doubtless the muscles and the bones, 

 which increase more rapidly than the average increase of the body. 

 Heart and liver both grow nearly at the same rate, and by the 



