Letter from James McCrone (Castle Mona) to the Duke of Atholl concerning the Duke's quarterly salary and allowance for Lady Henry, and reporting the seizure by Liverpool Custom House Officers of a barrel of polishing powder (asbestos) claimed subject to customs duty. McCrone disputes the seizure and notes the substance may be of great commercial value. Also includes a list of magistrates appointed 21 December 1826 for various Manx parishes.