. Tables of calculated hour-angles and altitude azimuth table 30N. to 30S. : ex-meridian tables 60N. to 60S. and calculated reductions ans azimuths of bright stars from 1 hour to 3 hours from Meridian / c by Blackburne . 22 29 Cor. Decl. 18 o 15 N. Cor. 3 46t True Alt. •0- 9 30 + M. and distance run between observations N. 36°, E. 4om. = 324 N., 23s long. 27*2 E. giveslat. at and Observation 30° 324 N. Lat. 30 o N. /?30\ Tabular 5 54 40-4Decl. 18 oiN.^nCor. +2 24-3 Alt. 9 30 10 j ( Variations. S. , s. D. +228x 4- o\= + o57 A. -479X - 30 = +14370 Cor. A
. Tables of calculated hour-angles and altitude azimuth table 30N. to 30S. : ex-meridian tables 60N. to 60S. and calculated reductions ans azimuths of bright stars from 1 hour to 3 hours from Meridian / c by Blackburne . 22 29 Cor. Decl. 18 o 15 N. Cor. 3 46t True Alt. •0- 9 30 + M. and distance run between observations N. 36°, E. 4om. = 324 N., 23s long. 27*2 E. giveslat. at and Observation 30° 324 N. Lat. 30 o N. /?30\ Tabular 5 54 40-4Decl. 18 oiN.^nCor. +2 24-3 Alt. 9 30 10 j ( Variations. S. , s. D. +228x 4- o\= + o57 A. -479X - 30 = +14370 Cor. Green. Long, in Time Long. Run Long. 5 57 04724 00 ooo 18 2 55-3IQ 22 290 I 19 34 19 53 30 12 E. 19 2618 W. Cor. +i4427 = 2 24*3 Lat. Var. V26 gives Az. (p. 258) N, 74*8 E. and(p. 266) for Plane Chart N. i7°4 W. i26 + 4 gives •315 long. H. M. s. 23 17 23 Eq. Time + 3 46 2ND 0 Observation. Decl. (12th) h 3 14 N. Var. 38 X 07 h. == - 27 S. Obsd. Alt. ® 60 3230 ft. Cor. 4-10 23 21 9 Cor. Decl. 18 47 X. True Alt. Lat. 30 32*4 N. C 30 j Tabular 18 2-8 18 l^- l6o 1 Cor. , NLong 19 ZaiiW. G. Diff. Long. Lat 3032 4/VLonp /9 30 H. M. 00 59-1 -4 4-8 I 56 54 324 00 00O 22 3 57 23 21 9o Variations. S. , D. +2-36X 4- 2-8 = A. -4-83X 4-42 = 60 42 6-6i- 202 86 - I -50 X + 32-4 =Cor. - i9625 - 48-60 244-85=4 4-85 Long, in Time i 18 3-3 i50-^4gi\es -375 lon§ 19 30 50 W. -375 N. to E. 26 18 W. -315 N. to W. 4-5 -69 : d. long. 4-5 : : lat. io : lat. cor. 6*5. Lat. 30 324 N. Long. 19 30-8 W. Lat. Cor. 65 N. Cor. 65 x375 2-4 E. Lat. in 30 38-9 N. Long, in 19 28-4 W. \ar. 1-50 gives Azim. S. 72*0 E. and for PlaneChart N. 2oi° E. XXX EXAMPLES IN THE USE OF THE TABLES SUMNER PROBLEM AS GIVEN IN THE BOARD OF TRADE EXAMINATIONS FOR MASTERSAND MATES, WORKED BY THE AID OF DAVISS CHRONOMETER TABLES ANDBLACKBURNES EX-MERIDIAN TABLES 1898.—On June 20th, , at ship, at sea, and
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