seem like a counsel of elementary precautions to-day, but they involved an important reform of method in 1810.
Flinders also wrote on the theory of the tides; a set of notes on the magnetism of the earth exists in manuscript; a manuscript of 106 pages, consisting of a treatise on spheric trigonometry, is illustrated by beautifully drawn diagrams, and includes an account of eight practical methods of calculating latitude and five of calculating longitude. In Mauritius he read all he could obtain about the history of the island, and wrote a set of notes on Grant's History.
He was eager to praise the work of previous navigators. Laperouse was especially a hero of his, and he wrote in French for the Société d'Émulation of Ile-de-France an account of the probable fate of that celebrated sailor. In an eloquent passage in this essay, speaking of the wreck, he cried: "O, Laperouse, my heart speaks to me of the agony that rent yours. Ah, your eyes beheld the hapless companions of your dangers and your glory fall one after another exhausted into the sea. Ah, your eyes saw the fruit of vast and useful labours lost to the world. I think of your sorrowing family. The picture is too painful for me to dwell upon it; but at least when all human hope abandoned you, then—the last blessing that God gives to the good—a ray of consolation shone upon your eyes, and showed you that beyond those furious waves which broke upon your vessels and swept away from you your companions another refuge was opened to your virtues by the angel of pity."
Knowing the extreme difficulties attaching to navigation, even when in the public interest he had to make a correction in the work of others, he was anxious to cause no irritation. He sent to the editor of the Naval Chronicle a correction in Horsburgh's Directions for
