91)8 THE DYNAMIC TEMPERAMENT. 



12*92 to 15-85 per cent; whereas in persons of 

 feeble constitution, they varied from 1 1 to 8 per 

 cent. They also found that in persons labouring 

 under phthisis, scrofula, scurvy, rickets, dropsy, 

 and other low diseases, the ratio of solid particles 

 varied from 8 to 6*40 per cent, or nearly the same 

 as in cold-blooded animals, in which the solid 

 matter varies from 8 to 4-80 ; corresponding with 

 the imperfect developement of their lungs, brain, 

 muscles, and whole organization. Hence a com- 

 mon expression among the vulgar, in regard to 

 persons whose blood is impoverished, that they 

 are " weak as water." 



The dynamic temperament embraces the san- 

 guine and choleric of Richerand, the thoracic of 

 Thomas and Caldwell, with some other subordi- 

 nate varieties. For example, if the chest be 

 large, the lungs sound, the body not encumbered 

 with fat, the health good, the muscles fully deve- 

 loped, and the brain small, we have what has 

 been called the athletic temperament, as in boxers, 

 wrestlers, agricultural labourers, and other indi- 

 viduals who have spent their lives in active 

 employment of the muscles. In professional 

 boxers, stone masons, and blacksmiths, the 

 muscles of the chest and arms, are the most fully 

 developed ; whereas among porters, pedestrians, 

 and savage tribes, those of the lower extremities 

 predominate, because more constantly exercised. 

 In the middle latitudes of Europe, the mean 



