ILLUSTRATIONS. 



Chart 1. Diagi-am showing prevalence of cholera in Mariquina, San Mateo, 

 Montalban, and Pasig, Eizal Province. 



2. Diagram showing prevalence of cholera in Binangonan, Rizal Province. 



3. Diagram showing prevalence of cholera in Taytay, Rizal Province. 



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