## Lucas's tables for finding the longitude by the meridian altitude, at sea, without the aid of a chronometer. Ed. J.C. Manning |

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00 00 Equation 0i Oi 13 5 Secant 14 Co-Secant 21 Secant 32 Secant 37 Co-Secant 42 Co-Secant 49 Sine altitude at noon applying the Equation ax 1 HX Barbadoes barque c o w Chronometer cn cn cn Co-Sine DAILY VARIATION DIFFE Dist find the mean finding the corrections finding the Longitude FOB SECONDS full altitude Greenwich alt Greenwich altitude Greenwich mean half altitude half the Noon's Half-sum HX a 9 HX AX J4oq July 21st July 9th l.tm laid Latitude at Greenwich London Bridge Long Meridian alt Meridian Altitude method of finding miles per hour NAUTICAL ADVERTISERS Noon's altitude North of 45 oi en oi oi oi oi op4oi PABTS Polar Distance prove the meridian Remain rising and setting Rule.—When south Secant 1816 Co-Secant ship Swansea take half Take the full West WILLIAM LUCAS