The tackle was also fixed for raising and lowering the chandeliers ; and those being hung, there was now nothing to hinder our making trial by lighting the candles, while it was daylight, to see that everything, regarding the .14 operated in a proper manner. Accordingly, this afternoon. we put up twenty-four candles into their proper places, and continued them burning for three hours ; during which tune we had a very et•etual trial ; for it had b!oati a hard ga'e of wind at south-east all day, Nyllich still continued ; and, keeping it fire at the same time in the kitchen, they both operated together without the least into] ferenee ; not any degree of smoke appearing in the lantern, or any of the rooms : and, by opening the vent-holes at the bottom of the lantern, it could he kept as cool as we d hereas, in the late lighthouse, this used to be complained of. as being so hot, especially in summer, as to give much trinffile by the running of the candles.
" Wednesday, October the 3d, we began to fix the con ductor for lightning. As the copper reached the ball, and from thence Caine down to the kitchen floor, above forty feet, (see Plate 11.) I 0,11,1,h-red this as con taining so much metal, that, it' struck with it thus far be SUIFICIVIlt, come evince; then joininf the kitchen grate to the leaden sink. by a metal convey:ince, the sink pipe of lead would convey it to the outside. From the sink pipe downwards, which being on the nolth--itst side. was consequently the least subject to the stroke of we continued the electrical communication by means strap of lead, about one inch and a half broad and three• eighths thick, fixed on the outside by being nailed to ieiken plugs, driven into two jumper holes in the solid of curse; the prominent angles of the strap being chionfrred Al it bedded and brought to a smooth surface with putty. At the
foot of the leaden strap, an eve-bolt or iron was di 'yen into the rock ; and to this was fixed an iron chain. long enough to reach at all times into the water ; its lower end heir g 'eft loose to play therein, and give way to the stroke of the waves: by this means an electrical communication was made from the top of the ball to the Everything being now completed, notice was sent to the Trinity House, and, on Tuesday evening. the Mit of October, 1759, the lights were first exhibited, amidst the fury of a violent storm.
This excellent building exhibited no other light than what was produced by twenty-four candles, which was not always sufficient, till 1809, when Mr. IZobinson, surveyor of light houses to the corporation of the Trinity 1 louse,superseded these candles by the same number of Arganil lamps, each accurately fixed in the focus of a large parabolic reflector of richly plated copper, arranged on circular frames ; and consequently giving light in every direction. The improved brightness of the light, by this exchange, exceeded the most sanguine expec tation of all in the neighbourhood of Plymouth.