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140 THOMPSON'S COAST PILOT. four ounces lamp black, and one quart of linseed oil; to be boiled on a slow fire for half an hour, then used or laid on cold. For Maxine Liquiv Brackine.--Four ounces of ivory black, five or six tablespoonfuls of molasses, one and a half ounces oil vitriol, one and a half ounces of sweet oil, and six gills of vin- egar. After mixing the ingredients well together, and stirring them trequently, the blacking will be fit for use. To Maxx Taz Best Dryina Ow.--Mix one pound of litharge of gold to every six gallons of oil (linseed); boil it over a slow fire, but not too much, lest it prove too thick and be unservice- able. TO MARK A LEAD LINE. At two fathoms, black leather, split once; at three fathoms, black, split twice, leaving the lower end out about two inches, which forms three pieces ; at five fathoms,a white rag; at seven fathoms, a red rag of bunting; at ten fathoms, a piece of leather, with a hole in it; at thirteen, the same as three; at fifteen the same as five; at seventeen, the same as seven; at twenty fath- oms, two knots. Deep sea lead lines are marked the same as far as twenty fathoms; then add one knot for every ten fath- oms, and a small strip of leather for every five fathoms. MARKS AND DEEPS OF THE LEAD LINE.» Mark two, mark three, deep four, mark five, deep six, mark seven, deep eight, and nine, mark ten. | | In heaving the lead, if any of the marks are even with the water's edge, the man heaving sings out whatever mark is shown, and if it is a quarter less, he says, quarter less five, or whatever it may be. If a quarter er half over any of the marks or deeps, he sings out accordingly, and a quarter five or a half five, ete. * To heave the lead the seamen sprung, And to the watchful pilot sung-- Quarter less jive." ie 2 Viststtity.--The windows of a large house can be counted about 13,000 feet or 23 miles; men and horses at 1} miles, as points. A horse can be clearly distinguished at 4,000 feet. The movements of men at 2,600 feet, or 4a mile. An Arabic mile is when you cannot tell a man from a woman, in clear weather, with good eyes.