57 
Easl roast. 
alteration in lifclitH. 
the course of erection for the exhibition of the following lights on East Coast of China: — 
Interval of 
Revolution 
of Flash. 
Miles seen 
in clear 
Weather 
from 
a Ship's 
Deck. 
Colour or 
any Peculia 
rity of 
Lighthouse. 
Height in 
Feet 
Centre of 
Lantern 
abov High 
Water. 
Ileightin 
Feet of 
Building 
from 
Base to 
Vane. 
Probable 
Date of 
Exhibition. 
Character 
and Orderof 
Illuminating 
Apparatus. 
Remarks. 
Dioptric. 
25 
Iron 
315 
100 
Januarv 1872 
1st order. 
22 
Brick 
230 
45 
Januarv 1871 
1st order 
Building. 
h 
Brick 
80 
30 
June lf»72 
4th order. 
22 
Brick 
240 
30 
•Januarv 1872 
1st order. 
Kverv half 
22 
Brick 
233 
45 
Januarv 1872 
1st order 
Will be obscured from 
minute 
W. N. W. to W. 1 i N., 
and from S. W. 1 2 S. 
to W. Vs s. 
Every minute 
23 
Brick 
2» 15 
25 
September 1871 
1st order. 
22 
Iron 
225 
25 
Januarv 1871 
1st order. 
23 
Brick 
250 
50 
Januarv 1872 
1st order. 
12 
Brick 
50 
40 
Mardi 1872 
4th order 
.Will show white down 
12 
18»; 
March 1872 
4th order 
the entrance of Wang- 
153 
Mardi 1872 
Oth order 
' poo river. 
11 
40 
April 1871 
4th order 
From 1st April to 1st Nov. 
be changed from a red revolving light to a white revolving light, of 4th order, dioptric, 
the sea and visible 6 miles, will be placed in position in January 1871. 
date as the exhibition of Woosung light, viz., March 1872.