Boring, Kind's Improved System of, by S. H. Blackwell. Casting Moulds, Improved, by R. Jobson Crushing and Amalgamating Machine, Berdan's, by the Secretary. Friction Hammer, by J. Kitson. Furnace Valve, Prideaux's Self-closing, by J. E. Hodgkin Roof, Wrought Iron, of Birmingham Station,! by E. A. Cowper. Safety Mine Apparatus, by A. Slate Subjects for Papers Travelling Crane, Steam, by W. Fairbairn Water Filter, by A. Slate Water Meter, by C. W. Siemens PACE. 1 101 123 87 62 33 133 111 21 70 119 49 79 57 45 96 75 6 |