Glowing Account of the Johnson and Phillips Insulator

The most glowing accounts keep on reaching us of the behaviour of the new Johnson and Phillips' Patent Insulator. A copy of the tests obtained from twenty of these during the month of February is now before us. The resistance never varied from 14,200 megohms, whilst that of twenty of the ordinary white porcelain form erected alongside of them ran down as low as 71 of a megohm. The object of the new Johnson and Phillips is, as in every open line insulator, to prevent surface leakage. This is attained by means of an insulating fluid, which will not support a film of dust or moisture, and which is placed in a recess formed in the porcelain, and well protected from the weather. It will be interesting to note how long this high standard of 14,200 megohms is maintained. The idea of the fluid being employed in this way is by no means a new one. Mr. Varley, if we mistake not, tried it many years ago, but eventually with such indifferent success, that he abandoned it in favour of the well-known forms which now bear his name.