A Chronological Table of Chief Events and Discoveries in the History of Anæsthesia
| Nitrous Oxide | |
| Joseph Priestley | 1776 |
| Humphry Davy | 1800 |
| Horace Wells (Colton, Riggs, Evans, Best) | 1844 |
| Alcohol | |
| Collier | 1835–42 |
| Ether | |
| Michael Faraday | 1818 |
| W. E. Clarke | 1839 |
| Crawford W. Long | 1842 |
| E. E. Marcy | 1844 |
| W. T. G. Morton | 1846 |
| Charles T. Jackson | 1846 |
| First surgical operation in America | October 16, 1846 |
| First surgical operation in Great Britain | December 21, 1846 |
| (Warren, Hayward, Bigelow, Boote, Robinson, Liston,Buchanan, Louget, Snow, Simpson, Bernard, Clover) | |
| Chloroform | |
| Guthrie | 1831 |
| Waldie | 1847 |
| James Young Simpson | 1847 |
| First surgical operation under chloroform, in Edinburgh | November 15, 1847 |
| (Soubeiran, Liebig, Dumas, Flourens, M. Duncan,G. Keith, Snow, Nunneley, James Arnott) | |
| Cocaine | |
| Gädeke | 1855 |
| Hughes Bennett | 1874 |
| Von Anrep | 1880 |
| Koller | 1884 |
‘Wellcome’ Brand Chloroform, 1/4 lb. in drop bottle—exact size