industrial applications, such as wells, draining ponds or mines, and fire fighting. His calculation of the volume of steam (approximately two thousand times that of water) was not improved upon until the later part of the next century, and was of importance for the future development of a working steam engine. a non-decimal adding machine (working with English pounds, shillings and pence), similar to the Ciclografo of the Italian Tito Livio Burattini and made by Humphry Adamson a machine that made trigonometric calculations an 'arithmetical machine' by which the four fundamental rules of arithmetic were readily worked "without charging the memory, disturbing the mind, or exposing the operations to any uncertainty" (regarded by some as the world's first multiplying machine, an example is in the Science Museum in South Kensington). in 1666 he also obtained a patent for making metal fire-hearths in 1671 he claimed credit for inventing the speaking trumpet, an early form of megaphone. One of only eight known surviving examples is displayed at the parish church of St Peter and St Paul at Harrington, Northamptonshire. The device, also known as "The Harrington Vamping Horn", was demonstrated to Charles II in St James's Park. he later won a contract to provide mirrors to the King and to erect and maintain the King’s printing press. in 1681 he was appointed magister mechanicorum (master of mechanics) to the King for his work on the water system at Windsor. he also corresponded with Pepys about naval gun-carriages, designed a machine to weigh ship's anchors, developed new forms of barometers, and designed a cryptographic machine. Personal life and family From 1677 he lived in the Vauxhall area of central London, where he made improvements to New Spring Gardens which later became Vauxhall Gardens. In 1684 he moved to a house in Lower Mall, Hammersmith. Morland married three times: In 1657 he married the Huguenot Susanne de Milleville, daughter of Daniel de Milleville, baron de Boissay; they had three children. She died in 1668. In 1670 he married Carola Harsnett, daughter of Sir Roger Harsnett; they had two children. She died in 1674. In 1676 he married Ann Feilding of Solihull, sister of Beau Feilding. There was no issue, and she died in 1680. There are monuments to two of Morland's three wives in the nave of Westminster Abbey. He began to go blind, losing his sight in about 1692. He died on