The rise and fall of the tide at the anchorage of the squadron off the Pei-ho was twelve feet. It was high water at full, and change at III. The flood tide runs to the west-south-west, and the ebb generally about east and east-south-east. Its strength and direction are a good deal influenced by the prevalent winds.
NOTICE TO ACCOMPANY THE CHART OF THE WEST COAST OF COREA.
[Sidenote: Inadequate time allowed for so extensive a survey.]
This chart extends from 34º to 38º north latitude, and from 124º to 127º east longitude. The time of our stay on the coast being only nine days, no great accuracy is to be expected, and this chart pretends to be little more than an eye-draught, checked by chronometers and meridian altitudes of the sun and stars. Under circumstances of such haste, much has unavoidably been left untouched, and what is now given is presented with no great confidence.
[Sidenote: General remarks on the methods followed in the survey.]
What follows is extracted from notes made at the time by Mr. Clifford and myself. The longitudes by chronometer have all been carefully recomputed, and the greatest care was taken in ascertaining the various latitudes. The true bearings are in every instance set down, the variation being allowed for at the moment. The variation of the compass recorded in this notice, was determined by two azimuth compasses, and the method recommended by Captain Flinders, of repeating the observations by turning the compass first one way and then the other, was invariably followed.
[Illustration: Track of His Majesty's Ship ALCESTE and LYRA Sloop along the Western Coast of the PENINSULA of COREA by Captain Basil Hall R.N.]
[Sidenote: The ships leave China.]
[Sidenote: Make the coast of Corea.]
[Sidenote: Sir James Hall's group.]