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Show [ 17-t J 490 NUEVA HELVETfA.' n etermt·n a tw' n nifthne ' MarciL 22, 1t>44-altilude ofthe 1.tn ' OB~EHV AT ION~ - Flll!<T St:ru t!<. Double altitudes of the Time of chronometrr. sun's lower limb. Douhlc altitud<'t-1 of the Time of chronometer sun':-; lower liutb. DeK· 1/HII. :sec. h. miu. M'C. Dcg. nun . SIJC. ft. ntitt. hec 46 31 10 7 1:3 32.5 47 21 50 7 45 52.0 46 11 :35 44. 00.0 47 !l!) 40 46 12 4 46 f>O 00 44 22.5 47 38 10 4.6 36.0 47 01 20 4.!) 01.0 47 45 50 4.6 66.4 47 11 45 4.5 :}2.0 47 55 10 47 20.6 Index error =-= + 8 sec. RESUL'l' O.E' CAI.CU LATIO!\. · Mean time. Rrtard. h. min. sec. II. min. . ec. 08 23 0 22 50.2 ENCAMPMENT ON THE RIO DE L0:-5 MUKELEMNE DeterminaUon of /ongitutle, Marclt 25, 1844-aLtitudes of t!Je sun. OllSE It V ATIONS. I HrtST St-:llU:!>. I Double altitudes of the sun's lower limb. Time of chronometer. 1 Double altitutlcs or tho Time of chronometer su 11 :-; lower limb. -- Deg. rn L?t. sec. 52 16 25 52 05 15 51 5~ LO 51 41 10 51 30 40 h. nun. sec. -II JJrg. IIU 1/. Sf'C . 3 30 49.5 51 1!) 10 31 20.!) 51 11 40 :H f>4. 6 5 1 Oil 50 32 2G. 0 50 52 50 :32 5L.O 50 4•1 3G h. m111. sa :) 33 2!.1 33 42.5 34. [!.6 :31 34.0 :31 56.0 --- Tntlcx error = + I 0 sec. RESUJ:r OF CALCULAT!O~. Mean time. Retard. Longitude. lt. mm. ser. 0 25 Z3.7 Dct;. r,Litt . 121 2:3 ft. min. SfC. 3 58 39 •The cJaily losing rate of the chroltomctcr, obtained fr0m the •. · 1 · is 25''. 74 b:-lcrvati,m« o.t lul" p aCl' 491 [ 174 J ENCAMPMENT 0 THE RIO DE L . MUKELEMNE. Determination of lalilurle, ll1urc/,_ 25, 1 '1 ·1-a/Ntudes of Polaris OD~ERVATIONS. Douhle altitudes of PolariR. Time• of chronomct('r. Del{. min. sec. II . min . sec 75 32 30 7 22 23 7!) 31 26 23 28 75 29 50 25 10 75 29 25 26 07 15 28 40 27 22 711 'J.7 40 28 21 1f> 26 00 29 51 75 26 40 31 14 7() 24 45 32 21 75 2:l 45 3!3 10 - --• Index error = + 10 src. RESUL'r OF CA LCULATION. True altit udc. Mean tim('. Latitude. Deg. mm. sec Del(. min. sPc. 37 4.2 52 lt . mm. sec. _________ 7 53 21 38 0 23 ____;.. --- ENCAMPMENT ON THE RIO DE LA CALAVERAS. Dete?·minalion of longitude, Marc!1 26, 1844-altitudes of the sun OB ERVATION ' . FfRST . ERIES. s r.co. n s.~-:nr.t!->. - --------··------ 1 Doublr altitudcF~ of the 1 Time of chronometn I---------'_~un's lower lirnh. 1 Double altitudes of the Time of chronometer. eun's lowrr limh. Deg. min. sec. 54 06 00 "3· 53 5[ 45 53 37 50 n3 26 :]() 53 !!) lO --- ntin. ser. 26 2l.O 26 1)!).1 27 34.1 2A O:J. fi 2H :.16. 7 I I Dcg. mm. ser. k 53 05 00 3 52 58 ;I() fi2 4 :1 11 52 39 10 !)2 26 10 fndex rrror - + 12 sec-. mm. 2!) 29 29 30 30 RE UI.'l' OF CALCULATION. ----------------~--- Mean time. h. min . 3 54 ----- .1ec. 5R lt. 0 Retard. 1/LII/ 26 -~I' I: . 16. :l Dtg 121 Longitude. 111111 16 8CC 22 sec 03.!) 22. f) 48. 7 t4.0 49 4 |