The first man known to use a signal other than a( M* Z' g3 }- }
bonfire used a chandelier. He was lord of a castle that
$ ]+ p' q2 x8 n* m stood near a rocky seacoast. He hang the chandelier, 1.__________) ~ n9 k# K9 Y$ {1 N% g, [
containing many large tallow candles, in the highest
2 E3 J) a, }( x9 R' I tower of his castle. Thus he warned passing ship from 2.__________& ?( v& W& A3 ?( H" X# z
the danger along the coast. Candles soon became the common fuel for signal* z1 Y9 i8 L Q3 K5 b: \4 d
lights. They were later replaced by oil lamps, that 3.__________3 E# X3 c0 ~3 A$ y& b
could burn larger and brighter. Kerosene and gas lamps 4.__________% I$ H7 n. {( @
also tried. These are still in use now in some smaller( ~5 e- L* d7 ~
lighthouses. But today most lighthouses sent electric 5.__________' ^& R a2 z7 p) K# N+ G" e; b ?" F
light blazing out over the sea.
" V3 {$ @( m" I7 z s- ^( T! ?8 Q( ] The ancient fire signals only say "Danger! Keep off!".
+ w4 y& r1 h+ A0 P! L* m But the modern lighthous also identifies it in a code 6.__________
$ k7 a4 Z, i, i3 e1 C/ @. Y known to all shipping. Most of the great lights have2 \/ k$ J* I6 _' J2 V% d0 ~$ m
their own special signals. The light may be one that' i# Z6 `; Z+ r' K. @$ ~, g
blinks--as a giant firefly in the night. Or it may be 7.__________; I- [1 j4 `% U; t! r" c
a revolved light that is red then green. Or it may be 8.__________
, B2 @- K7 a9 v- |5 T only white. But however the signal, it is sent very 9.__________
6 G9 g9 ^( D7 | regularly. A ship within its ranges is never at a loss to
G, ~. q$ o% ^. n3 | know which lighthouse it is, and where it is being 10.__________; I: o# f& [' q3 ]8 x& s
located+ z5 q5 U) D: i- p. A" x
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