Letter, from William Henry Fitton to Sir John Herschel, dated at Tanhurst near Dorking Autograph letter signed by sender. Has written to Charles Babbage to express sympathy on the death of his wife, but fears there is not much can be done for him. Has given up the Dorset operations. Comments on John Frederick William Herschel's theory of sulphurate of iron. May be one of his neighbors soon as he has been offered a residence at Beaconsfield. 7 September 1827