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If the Liimfjord becomes an open strait, the washing of sea-sand through it would perhaps block some of the belts and small channels now important for the navigation of the Baltic, and the direct introduction of a tidal current might produce very perceptible effects on the hydrography of the Cattegat.
But the hydrography of almost every considerable river and its tributaries will be found to embrace most special cases, most known forms of superficial fluid circulation. For rivers, in general, begin in the mountains, traverse the plains, and end in the sea; they are torrents at their sources, swelling streams in their middle course, placid currents, flowing molli flumine, at their termination.
There are no fortifications of any kind in them, but they are surrounded on all sides by mountains. Hydrography. Few countries of the extent of Porto Rico are watered by so many streams. Seventeen rivers, taking their rise in the mountains, cross the valleys of the north coast and empty into the sea.
We are met together here to thank God for all gallant mariners, and for all who have helped mariners toward safety and success; for all who have made discoveries in hydrography or meteorology, in navigation, or in commerce, adding to the safety of seamen, and to the health and wealth of the human race; for all who have set noble examples to their crews, facing danger manfully and dying at their posts, as many a man has died, a martyr to his duty; for all who, living active, and useful, and virtuous lives in their sea calling, have ended as they lived, God-fearing Christian men.
Geography, chronology, arithmetic, music, are brought into something of scientific form, and like rapid sketches are given of the question of climate, hydrography, geography, and astrology.
The sailor's reasoning was very just, and pointed out an incomprehensible fact, for the document appeared to have been recently written, when the colonists found it in the bottle. Moreover, it gave the latitude and longitude of Tabor Island correctly, which implied that its author had a more complete knowledge of hydrography than could be expected of a common sailor.
The "Systeme Glaciaire" was, on the contrary, an account of a connected plan of investigation during a succession of years, upon a single glacier, with its geodetic and topographic features, its hydrography, its internal structure, its atmospheric conditions, its rate of annual and diurnal progress, and its relations to surrounding glaciers.
In plain fact we were merely two young gentlemen in a seven-ton pleasure boat, with a taste for amateur hydrography and police duty combined. Not that Davies ever doubted. Once set on the road he gripped his purpose with child-like faith and tenacity. It was his 'chance'. 11 The Pathfinders
These discoveries; the valuable additions which were made during the voyage of Captain Maxwell to the geography and hydrography of the Yellow Sea; the correction of the vague and incorrect notions which were long entertained respecting the isles of Jesso and the Kuriles, by the labours of La Perouse, Broughton, Krusentein, &c., and the full and minute information given to the public respecting Java, and other parts of the southern Indian archipelago, by Raffles, Craufurd, &c. seem to leave little to be added to our geographical knowledge of the eastern and southeastern portions of Asia.
The sister sciences of geography and hydrography have enabled us to pursue our way to any quarter of the habitable and uninhabitable world. With the history of geography, moreover, our proudest feelings are associated. Where are there names dearer to us than those of the noble and devoted Columbus, of Sebastian Cabot, of Cook, of Humboldt, and of Belzoni and La Perouse?
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