To the Kditor of the "Norra Carsa Datty News.
Sim,—During my stay in Shanghai the other day, letters unser the above heading from Che master of a tramp_ steamer" appeared in the issues of the 17th, 18th, and 19th of March. These letters with their criticisms of the British Admiralty charts, and the surveys from which they were made might be passed without comment, were it not for the want of realisation they display of the enormous difficulties under which many of the surveys of the China coast were made, through the natives not understanding meant by to. mecsuriog of land bases, what was wea
the marking of prominent objects, and the taking of sextant angles, and the impression they give that the writer had not taken into consideration the fact that the many independent surveys of the China coast after having been completed, have not had the advantage of being reduced to one groundwork of Ordnance survey, have those of the coasts of Great Britain. Mill the letters were useful in that they drew my attention to a couple of interesting letters which appeared in the issues of the 2ist and 28th of January under the heading of "The Lighting of the China Coast and the lateer of the two directed my attention to a most interesting leader you had written on the same subject, and Which must be my excuse for asking you to print the following suggestions 1.—That the Tungsha light-vessel, with her Group-Flashing light and Fog Siren, be moored in Latitude 31°.03' N., Longitude 199°,11'3 B.
2.—A similar light-vessel, but showing a Revolving light, alternate red and white, and visible 11 miles, to be moored in Lat. 312.08' N., Long. 129°.00' E. vistbte 8 miles on the Ariadne Rock, Or
Text read from the printed page and cleaned; old type leaves the occasional error.