| Plate in Colour:The Marconi Transatlantic Wireless Station at Glace Bay, Nova Scotia [Frontispiece] |
| FACING PAGE |
| Hydro-Electric Power Station | [30] |
| (a) Experiment to show Magnetic Induction | [48] |
| (b) Experiment to show the Production of Magnetism by an Electric Current | [48] |
| (a) Lines of Magnetic Force of Two Opposite Poles | [50] |
| (b) Lines of Magnetic Force of Two Similar Poles | [50] |
| A Typical Dynamo and its Parts | [70] |
| Lots Road Electric Power Station, Chelsea | [76] |
| Power Station Battery of Accumulators | [80] |
| Electric Colliery Railway | [86] |
| Typical Electric Locomotives | [90] |
| Night Photographs, taken by the Light of the Arc Lamps | [96] |
| Where Electrical Machinery is made | [120] |
| Specimen of the Work of the Creed High-Speed Printing Telegraph | [140] |
| Large Electric Travelling Crane at a Railway Works | [164] |
| (a) Marconi Operator Receiving a Message | [188] |
| (b) Marconi Magnetic Detector | [188] |
| Röntgen Ray Photograph of British and Foreign Fountain Pens | [240] |
| Bachelet “Flying Train” and its Inventor | [272] |
| (a) Cavalry Portable Wireless Cart Set | [280] |
| (b) Aeroplane fitted with Wireless Telegraphy | [280] |