Letter, from Élie François Wartmann to Sir John Herschel, dated at Geneva Autograph letter signed by sender. Comments on electrical equipment, and then refers to a variety of experiments, including shocking chickens awake that have been given ether, and the study of other electrical effects on gases and various liquid substances. Wonders about the use of ether/electric shock on humans in surgery. Congratulates John Frederick William Herschel on his Cape Results. 7 September 1847