In the last chapters of The Ghost Map we follow Dr. John Snow in his journey to prove that the cholera outbreak started in the Broad St. water Pump Handle and how he tried to prove that cholera was transmitted by drinking contaminated water and not by miasma as it was believed during that time. Chapter Six mainly talks about Dr. John Snow trying to prove that his waterborne theory was true by completing his Grand Experiment and interviewing people that were affected by the cholera outbreak; he also tried to find a correlation between the Broad St. water pump and the cholera outbreak. In this chapter we also see that Reverend Henry Whitehead (a believer in the miasma theory) tried to prove that John Snow’s waterborne theory was false. In the end Whitehead became Snow’s biggest ally, because the research that Whitehead conducted wasn’t able to disprove John Snow theory but instead help him to prove Snow’s theory. …show more content…
James Parish to close the Broad St. Water Pump Handle by explaining to them about their findings and how was that his waterborne theory proved that cholera was been transmitted by drinking water from the Broad St. Water Pump Handle. The Board of Governors of St. James Parish didn’t truly believe Snow’s theory, but they decided to close the Pump Handle and conduct their own research. The research that The Board of Governors of St. James Parish conducted was mainly to prove that the miasma theory was correct, it was until Reverend Henry Whitehead asked the Commission to open the water well, when the Commission found that they were wrong. When the Board of Governors opened the well where the water was storage they saw that the well was dirty with human feces. The conclusion of the book mainly talks about how the Grand Experiment that John Snow conducted and that Henry Whitehead helped him to conclude changed the