278 " SPECIFIC TREATMENT" OF DISEASE 



lead to death from heart failure on slight exertion, 

 and death may follow from other causes operating 

 upon the weakened individual. There are usually 

 three relapses in the course of the disease, but there 

 may be fewer or more. In a patient whose blood 

 is swarming with spirochaetes and who is in high 

 fever the injection of a single dose of salvarsan is 

 immediate in its action. The spirochaetes begin 

 to disappear almost at once, the fever ceases and 

 the patient recovers promptly. 



Although much has been omitted in the fore- 

 going account, because for obvious reasons it is 

 impossible to go into details, it is hoped that the 

 reader, who is not already familiar with the subject, 

 will have gathered this impression : 



That the dawn of modern medicine coincided 

 with the introduction of scientific experimental 

 method and observation into the study of the 

 processes taking place in the body in health and 

 disease. 



That every great advance has been purchased 

 by the unremitting toil of many laboratory workers 

 who have sought to discover the truth for its own 

 sake. 



That knowledge acquired in all branches of 

 pure science may in the ripeness of time render 

 the greatest practical service to man. 



