76 



Public Parks. 



diseases of this character, in addition to the fact that there was a 

 decided epidemic tendency. In the last half of this year an 

 extraordinary amount of rain fell, and the mortality by this 

 disease was greatest in the low and undrained parts of the city, fully 

 sustaining Pettenkoffer's theory with regard to the influence of the 

 "ground water" in this disease. In July and August, 1S67, there 

 was a marked tendency to Cholera, but less rain fell than in 1866, 

 and every case was promptly taken care of, so that in not a single 

 instance did a second case occur in the same house, even in those 

 of patients who came from other cities and died. In 1868 there 

 were no cases, and there was no epidemic tendency. It will be 

 seen that cases of Cholera Morbus occur more frequently when great 

 climatic changes occur. The same is the case with Diarrhcea, 

 Dysentery, and Inflammation of the bowels. The diflerence in the 

 number of cases of Gastritis, Hepatitis, and Peritonitis is simply of 

 registration, for in the first period the registration in 1866, as com- 

 pared with 1868, was imperfectly performed and the diagnosis was 

 not accurately determined. 



Fevers. 

 1866. 



1868. 



