First, we will speak of the wreck-chart of the British islands prefixed to the lecture. Round the entire coast is a prodigious number of _black dots_, of two kinds--one a simple round dot, and the other having a line drawn through it. They all point out the locality of shipwrecks during the year 1850, and the latter dot shews the wreck to have been total. The English coasts are most thickly dotted, but this is to be expected from the greater proportion of shipping; next in the scale is Ireland, and then Scotland, which has comparatively few black dots, the densest portion being on the west coast, from Ayr to Largs, where we count eleven, nine indicating total wrecks. In the Firth of Forth there are but three, one total. A sprinkling of dots is seen among the Eastern Hebrides, but not so many as one would expect. Turning to England, we count about forty-five wrecks in the Bristol Channel alone, by far the greater number being total. On the Goodwill Sands there are fourteen, all total but one. On the Gunfleet Sands there are nine, four total. They are numerous on the Norfolk and Lincolnshire coasts, especially off Yarmouth and the Washway. On the Welsh coast, particularly around Beaumaris, Holyhead, &c., the number is very great. In the firth leading to Liverpool, we count no less than twenty-one, of which twelve are total. On the north coast of England the numbers are appalling. Off Hartlepool are fifteen, eight being total. Off Sunderland are twelve, all total but three. Off Newcastle are fifteen, eight total. Ah, that fearful, iron-bound coast of Northumberland! We have hugged it close in calm weather, with a fair breeze, and the views we caught of its shores made us shudder to think of what would befall a vessel on a stormy night and the shore alee. The following is the awful summary of 1850:--'The wrecks of British and foreign vessels on the coasts and in the seas of the United Kingdom were 681. Of these, 277 were total wrecks; sunk by leaks or collisions, 84; stranded and damaged so as to require to discharge cargo, 304; abandoned, 16. Total wrecks, &c., 681; total lives lost, 784.'