Copy letter, from Sir John Herschel to John I. Taylor, dated at Feldhausen Contemporary copy in sender's hand, signed by sender. Compares John I. Taylor's observations of stars very favorably with most others available to John Frederick William Herschel; explains how John Frederick William Herschel had helped Thomas Maclear improve the mounting on a telescope at the Cape observatory, together with comments on other equipment. 7 January 1836