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Show [ 17-! J 530 ENUAMPMEN'f ON DUCHE:~Ng FOHIC DeterminalitJtl of latiludc, JJ!flt/) 30, l81 '1-rdlil1ul1 .~ of Polaris. OBSEH VA 'l'IOI'\ . • ---. Double altttudt•s of Polarit-. Tiuw 11 ' c-!1 n>uortwtt•r. J)e.t..r. llll /1. • 77 ttl 77 40 ~17 40 77 41 ·n 40 77 11 "' f 1 l 7"1 4Z 7'1 4 ! 77 1~ True ollttw<c D"l! 111111 . • ·ec :l8 1 n :1 <: src ()(I 50 25 1!'1 50 !30 !JO 1 ;) tfO 20 'l'hcnuomrlt•r 18°, lnclnx c~rror + fl Rr.c h 7 lU~'iULT 01•' C :\L< :Uf.ATION. M1•an tinw. lt. m£n. 81'1' 9 l(j 14 Mc:w latituJc 10 dvg. lH 1nin. !):.! i)(_C .1\'1' l1 lN'I'AH FOH.T. -- 1/UI/ . 8('('. 3() 3..: :J? !)8 3!) !l"/ 11 20 12 :)!) 44. 06 4!) .w t1 (j !37 47 41-l 49 01 Latitude• Dl't.; nan. .~ec ·10 18 6 Dete?·mZ:nati.on o.f fongilwlf', .June 3, lS·I4-a/Litnrles ofa L,yrw. OBSF.H VAT IONS. St:CO'lll f.J JllE~. Louhlo altitude~· o ' TitrH' of chrouonwtrr. Double altituJr:-: of Tim" of chronometer. a Lynr>. .Drg. 6,t:) 66 66 67 67 m•n . sec. 5H :~o 20 :JO 11 10 00 :LO 15 10 Mean time. h. min. sec. 8 39 08 IL • 6 7 a Lyrre. -------- min. !!('(' . Deg. min. 57 !J5. 0 67 81 50 00.0 67 4~J 59 59. f) ()8 07 00 51.:> 68 24 01 37.G 68 02 InJex error - + 6 sec. RESUl.T OF CALCULATION. RctarJ. h. mm. 1 37 3ec. 05.0 ser. 1 00 25 15 :ZO lt. rnin. src. 7 0~ 2u.o o:l 14.0 04 08.2 01 56.4 06 18.0 Longitude. 531 [ 174 ] AT UIN'l'AH FORT. Determinrttion of latitude, June 3, 1844-altitudes of Pol.ari . Oll ERVATION • ---------·-· Double altitu<l<'H of Polaris. 'f'imc of chronometer. De~. nun. 77 55 77 55 77 55 77 65 77 65 77 55 77 66 77 65 77 56 77 56 True aJtitud . Deg. min. 38 56 sec. 41 ser. 20 :JO "5 40 45 20 20 50 10 0() 'l'hcrmomctcr 68°. Ind x error = + 6 sec. lt. min. sec. 7 09 58 11 17 12 27 13 43 14 46 16 49 16 63 17 67 IS 54 19 47 RE 'ULT OF CALrULATION. lt. 8 M an time. mirz 52 sec • H. ])p/5· 40 Latitude. min. ':1.1 8f'C. 45 |