Title page from "Tuba Stentoro-Phonica, an Instrument of Excellent Use as well at Sea, as at Land" by Samuel Morland, London 1672, an account of a speaking trumpet presented to Charles II in 1671, part of the Springhill Library collections

Title page from "Tuba Stentoro-Phonica, an Instrument of Excellent Use as well at Sea, as at Land" by Samuel Morland, London 1672, an account of a speaking trumpet presented to Charles II in 1671, part of the Springhill Library collections, Co. Londonderry.