I'roct'edinys of the Ohio Statv Academy of Science -ttJl 



ul activity at that time, but it is much better lu get the exer- 

 cise with the fresh air. It would be interesimg and profitable 

 to follow this discussion with familiar examples of abnormal 

 development, diseased conditions botii chronic and acute, 

 caused by the lack of exercise whicli results in poor circula- 

 tion of the blood and the body tluid, and how the increase of 

 the circulation to a certain pari, may remedy many unsightly 

 forms, and diseased conditions of many organs, but the limits 

 of this paper will not permit. 



To keep well means to keep the circulation of the blood 

 and the lymph up to the highest possible ijoiiu and not overdo 

 it. To get sick is to reduce the- circulation below the upkeep 

 point. To get well after disease does get a hold is to restore 

 the circulation and bring it up and abo\ e the mere upkeep 

 point. Dr. Knopf would express these conditions as the body 

 being in physiological wealth (jr in physiological poverty. 



From this paper it will be seen that 1 place great stress 

 upon the circulation of the blood in physiology. Without a 

 true knowledge of this system modern medicine would have 

 been out of the question. The great feats of surgery which 

 we witness today would have been unkn<^wn without Har- 

 vey's discovery. This is only one illustration of how any 

 science is made up. One discovery after another makes it 

 possible for the next. Without Har\ey there could have been 

 no Claude Bernard and others who have followed after to 

 make the science of modern medicine and hygiene. 



