DETERMINATION OF TRANSATLANTIC LONGITl I-ffl 



449 



Computation of Transits observed at Cambridge on January 3, 1870 



Star 



Lamp 



Threads 



d 



M 



f 

 log-/ 



secant d 



log. Q 



log. a 

 log. R 



B 



b or b x 



A 



B 



C 



k 



Bb n or Bb 



5 Urs. Min 



E. (L. C.) 



CDE 



y Ceti. 



E. 

 CDE 



2 h 27m 46 8 .43 2 h 36 m 33 8 .73 



/5 Urs. Min. £ Ariktis 



E. (L. C.) 

 D<EF 



E. 

 CDE 



7 6° 1 6' 4" 



29 m 39 8 .371 



2° 41' 3" 



a PERSEI. 



E. 

 CDK 



y* Urs. Mix.! d 1'h;mi. 



2 h 51 ra 3 8 .23 3 h 7™ 25-.80 3 h 1 ->■ 8'.42 



i:. (I.. C.) 



CD B 



74° 41' 1" 



38 m 31-.695 



+ 



.024 



8.38021 



.62462 



.024 



9.00483 



.101 



.126 



3.697 



2.020 



4.213 



+ .066 

 .255 



29 m .39 8 .472 



39.793 



53.363 



.986 



54.349 



54.342 



8.38021n 



54 m 19 8 .845 



20° 33' 37 



// 



9 m 24 8 .080 



49° 23' 49" 



3 h 20 m 53V87 



E 



CDE 



8 h M-40\91 



72° 17' 4(i" 



47 22*11 



// 



21.842 



.00049 



8.38069n 



.024 



.149 



.639 



.770 



1.001 



016 



115 



38 m 31 8 .671 



38 31.540 



1 



57.810 



.234 



1 



57.576 



1 



57.570 



1.33929« 



.024 



17 M 2-.091 ."»47'.800 5-3$'.64 



8.38021m 



.57814 





.02858 



.024 



8.3802 In 



.18654 



+ 



.024 



.01 



8.3802 In 



8.3802 In 



.5 1 G93 



1.91743n 



1 22.686 



8.40879n 



.026 



8.5G675n 



.191 



3.371 



1.722 



3.786 



.221 



.037 



.244 



8.89714 



If 5 





+ .079 



.397 



.992 



+ 

 + 



.058 



.329 



1.068 



.188 



1.525 



.257 



8.54946m 



.< 



.214 



2.988 



1.373 



1.537 



.017 



.219 



.024 



3 



52 m 57M59 



52 57.546 



9 m 24 8 .054 



1 



54.316 



+ 



1 



.886 



55.202 



9 23.818 



.372 



17 



m 



2 8 .054 



17 



1.658 



1 



57.928 



1 



58.248 



.250 



1 



57.678 



1 



55.197 



1 



57.676 



.359 



1 



57.889 



+ 

 + 



.05 1 



.128 



1.470 



1.476 



.352 



22 m 47".87 



.023 



115 





35 m 39'.50f 



22 48.282 



1 54.112 



+ 



.769 



35 39.167 



1 



58.267 



1 



57.887 



1 55.181 



.345 



1 



57.922 





1 55.18M 1 17.921 



