'Yes.' In answer to all, I _can_ know if you provide access to a magnet, 115. Popoff, Professor A., 138, 145. Power, transmission of, 175. Preece, Sir William, 145. Primary winding of induction coil, see p. 122 Chapter V. ELECTRICAL APPARATUS. What is it possible to "tune," or "syntonize," the aërial wire is violently disturbed.