Geographical knowledge of the ancient Egyptians, p. 5--The mariner's compass, p. 7--Reference to the thirty-two points of the compass by Chaucer, p. 9--Halley's observations on the changes in the direction of the compass in a century, p. 10--Deviation of the compass, p. 11--The voyage of the _Carnegie_, the non-magnetic ship, p. 12--The "dip of the needle" first observed by Robert Norman, p. 13--The modern compass invented by Lord Kelvin, p. 14--Sailing by dead reckoning, p. 14--The invention of the "log," p. 15--The modern log, p. 17--The development of the sextant, p. 18--The astrolabe, p. 19--The quadrant invented by Hadley, p. 20--The perfected sextant, p. 21--Perfecting the chronometer,…
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