| Year | 1913 |
| Date | 05-Jun |
| Volume | 28 |
| Issue | 632 |
| Page | 529 |
| Category | General |
| Part | |
| Title | Some Interesting Scientific Experiments |
| Author | G.G.Blake |
| Notes | Radium. View of spark on sheet of glass, ordinary photograph of four pieces of uranium ore & two pieces of pitchblend, radium photograph of ores, thorium photograph of gas mantle, thorium photograph of gas mantle taken through sheet of paper, spark photograph of a coin on a sheet of glass, another view of spark on sheet of glass with reverse connection, another view of spark photograph of coin with reverse connection |