What is associated with: 1844 during a tooth extraction dr horace wells makes the first use of this gas as an anesthetic?

Who performed with '1843 and the pendulum'? What is associated with: 1843 1901? What is associated with: 1843 marley was dead to begin with? What is associated with: 1843s incidents of travel in yucatan was devoted to telling of this civilizations ruins? What is associated with: 1844 henry clay? What is associated with: 1844 was a good year for him he received a patent for his vulcanized rubber process? What is associated with: 1845 he is inaugurated as the 11th president? What is associated with: 1845 poem set in december at midnight in a chamber?