Two New Poles, recently erected at Woosung, 900 feet further up the River than the old ones, should be kept in line when crossing the Inner Bar. The low Pole, with a pyramidal top, is the front one; whilst the high Pole, with a rectangular top, is the back one or the one further from the River's Bank.
On or about the 1st of March, the three Old Poles will be removed, anda Red low Light on the River's Bank with a White high one on the low Pole, will indicate at night the line now given by the New Poles.
Any deep draft steamer requiring to cross the Bar at night, may, by making application to the Officer-in-charge of the Woosung Station, arrange to have a light hoisted on the Signal Staff, to show when there is water enough for her to cross.
DAVID M. HENDERSON, Engineer-in-Chief.
Engineer's Office, Custom House, Shanghai, 12th Feb., 1872. 2ma 422
Text read from the printed page and cleaned; old type leaves the occasional error.