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Letter from John Dicas about his improved hydrometer and alleged copy of his invention by Matthew Quin
Letter from John Dicas about his improved hydrometer and alleged copy of his invention by Matthew Quin
Letter from John Not about machinery for cleaning rivers and drains
Letter from John Not about machinery for cleaning rivers and drains
Letter from John Tulloch about his method of determining the longitude at sea
Letter from John Tulloch about his method of determining the longitude at sea
Letter from William Bigland about treatise on laws of mechanics
Letter from William Bigland about treatise on laws of mechanics
Letter from William Bigland about treatise on laws of mechanics
Letter from William Bigland about treatise on laws of mechanics
Letter from William Bridges about model for constructing an arch
Letter from William Bridges about model for constructing an arch
Letter from William Campbell Kitchingham about his scale for time
Letter from William Campbell Kitchingham about his scale for time
Letter from John Tulloch, petition, description and diagrams about his 'improvement in the method of discovering the longitude at sea' and 'Propositions for several mercurial and magnetic perpetual motions'
Letter from John Tulloch, petition, description and diagrams about his 'improvement in the method of discovering the longitude at sea' and 'Propositions for several mercurial and magnetic perpetual motions'
Letter from Henry Price about his naval pantometer
Letter from Henry Price about his naval pantometer
Letter from John Grant about Mr Geissler's astronomical clock
Letter from John Grant about Mr Geissler's astronomical clock
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from David Littlejohn jnr. about improved pulley for use with Mr Bell's machine
Letter from David Littlejohn jnr. about improved pulley for use with Mr Bell's machine
Letter from Joshua Ringrose about his portable ventilator
Letter from Joshua Ringrose about his portable ventilator
Letter from Robert Sanderson about his cropping machine
Letter from Robert Sanderson about his cropping machine
Letter from C Greenhow about his calculations about railway locomotives
Letter from C Greenhow about his calculations about railway locomotives
Letter from W J Hookers about the designing of conservatories
Letter from W J Hookers about the designing of conservatories
Letter from S Harding about Mr S S Smith's paper on the causes of oscillations in the locomotive engine
Letter from S Harding about Mr S S Smith's paper on the causes of oscillations in the locomotive engine
Letter from Dr Wansborough, certificates about his nipple shields
Letter from Dr Wansborough, certificates about his nipple shields
Letter from Henry Murrell about improved churn
Letter from Henry Murrell about improved churn
Letter from John Mathison about machine for cutting bread
Letter from John Mathison about machine for cutting bread