Letter, from John William Lubbock to Sir John Herschel Autograph letter signed by sender. Agrees with John Frederick William Herschel that the Government Observatories at the Cape and St. Helena require mature consideration. Greenwich observations are a different matter and were suggested by the Royal Society [of London] Committee of Physics. Has directed the minute to be sent to John Frederick William Herschel. Has been studying the wet bulb question. 22 March 1845