It is said that this immense prairie may be drained by lowering the St. Clair Lake, and some attempts have been ineffectually made to cultivate small portions of it near the mouth of the river, where there is a lighthouse. There were two huts, and people residing in them, with small garden patches of potatoes and peas. Forty acres had been ploughed by a settler, Mr. Thompson, of Chatham; but, although the soil is excellent, such is the vigorous growth of the grass, and the difficulty of getting rid of its roots, that it soon recovered its ancient domain. In fact, the wind spreads the seed rapidly; and as the kind is chiefly the blue-joint, it is almost impossible ever to get rid of it, unless the water-level is lowered, which is not very probable at present. CHAPTER XV. Engineer-officers have little leisure for Book-making--Caution against iced water--Lake St. Clair in a Thunderstorm--A Steaming-dinner--Detroit river and town--Windsor--Sandwich--Yankee Driver--Amherstburgh--French Canadian Politeness--Courtesy not costly--Good effects of the practice of it illustrated--Naked Indians--Origin of the Indians derived from Asia--Piratical attempt and Monument at Amherstburgh--Canadians not disposed to turn Yankees--Present state of public opinion in those Provinces--Policy of the Government--Loyalty of the People. A person employed actively in public life is a very bad hand to engage in book-making. I often wonder whether this trifle, now intended as an offering to the reading people, will ever get into print. A little memorandum-book supplies the _materiel_, and a tolerable memory the embellishment. An engineer-officer, of all other functionaries, needs a memory; settling at one moment the expenditure of vast sums; at another, looking into the merits of a barrack damage worth sixpence; then, field-officer of the day inspecting guards--next, making experiments on the destructive effects of gunpowder, commencing with a percussion-pistol, and ending with a mine; buying land, taking altitudes of the sun and of the moon, examining a Gunter's chain or a theodolite, sitting as member of a court-martial, or of a board of respective officers, or counting the gold and silver in the military chest; superintending a fortification of the most intricate Vaubanism; regulating the dip of the needle, or the density of the earth; putting an awkward squad through the most approved manoeuvres; studying the integral calculus, or the catenarian curve; bothered by Newton or La Place; reading German or Spanish; exploring Oregon, or any other terra incognita; building docks, supervising railways, surveying Ireland, governing a colony, conducting a siege, leading a forlorn hope; an Indian chief, or commanding an army (both the latter rather rare); well may his motto be, as that of his corps is, _Ubique_. So, gentle reader, if there is wandering in the matter of these pages, put it down, not to the want of method or manners, but to the want of time;