Mr. J. SWINBURNE : ' General State of Knowledge or Ignorance'
THOUGH nowadays we all look upon electric light as not only a convenience, but almost a necessity. few of us have any real and practical knowledge of electricity. This general state of ignorance is the subject of Mr. Swinburne's fourth talk, which will also touch upon measuring instruments, the standard cell, meters, cables, the gas engine, and the multiphase systems.
