Add punctuation: Most people have heard that a wise doctor in London identified the source of the cholera contagion by plotting the location of the victims on a map The clustering of the victims around particular wells revealed that cholera was spread through contaminated water
Most people have heard that a wise doctor in London identified the source of the cholera contagion by plotting the location of the victims on a map. The clustering of the victims around particular wells revealed that cholera was spread through contaminated water.