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THE POPULAR SCIENCE MONTHLY. 



The prominence of athletic sports has directed much attention 

 to the various problems that are intimately connected with their 

 practice in their various forms, and naturally the question of the 

 anatomical characteristics required for success in any branch of 

 athletics is one of the first to be investigated in the light of mod- 

 ern physiology and anatomy. 



One of the teachings of modern physiology is that function 

 makes structure ; that if horses are raced generation after gen- 



FiG. 2. Adolph Norsing in Skating Position. 



eration we get the slender, nervous race horse, while if they pull 

 heavy loads we have developed the Clydesdale type. Again, if a 

 man has to use his right hand and arm only, continuously in his 

 work we get it large and brawny, while the rest of his muscular 

 system may be but poorly developed. It is this specialism that 

 gives such a law a chance of showing its workings, so that one 

 can often pick out a man's trade by peculiarities in his physique. 

 In athletics, which include the severest forms of physical labor. 



