254 



DETERMINATION OF THE LONGITUDE OF SEVERAL 



In a few instances an observation at the western station is compared 

 with a European observation of the succeeding day, in which case 

 T = 24"' — western longitude of Greenwich from the station. 



Station No. 1 . East of Huron, Ohio. 



Date. 

 1835. 



Limb. 



Observatory com- 

 pared with 



Date. 



Limb. 



Resulting 

 Longitude. 



10 for 

 each com- 

 parison. 



Mean result 

 for each day. 



W for 

 each day. 



July 8 



8 



9 

 10 



I 

 I 



I&II 

 II 



Greenwich 

 Kremsmunster 



Kremsmunster 

 Edinburgh 



8 

 8 



9 

 10 



I 

 1 



I 

 II 



h. m. s. 

 5 29 48-4 

 45-2 



53-9 

 56-4 



0-00276 

 0-00331 



0-00307 

 0-00387 



h. m. s. 



5 29 46-65 

 53-90 

 56-40 



0-00339 

 0-00307 

 0-00387 



h. m. s. 

 Final Result, Station No. 1, West of Greenwich, 5 29 52-46 

 Probable Error, + 2-95 



0-01033 



Station No. 2. Turtle Island, Lake Erie. 



Date. 

 1835. 



Limb. 



Observatory com- 

 pared with 



Date. 



Limb. 



Resulting 

 Longitude. 



70 for 

 each com- 

 parison. 



Mean Result 

 for each day. 



W for 

 each day. 













h. m. s. 





h. m. s. 





Aug. 3 



I 



Greenwich 



3 



I 



5 33 34-5 



0-00315 









I 



Dorpat 



3 



I 



30-1 



0-00236 



5 33 32-62 



0-00384 



6 



I 



Edinburgh 



6 



I 



34-4 



0-00248 









I 



Cracow 



6 



I 



20-5 



0-00324 









I 



Dorpat 



6 



I 



27-9 



0-00296 



26-99 



0.00488 



7 



I&II 



Edinburgh 



7 



I 



32-1 



0-00406 









I&II 



Greenwich 



7 



I 



31-5 



0-00406 









I&ll 



Cambridge 



7 



I 



25-6 



0-00352 



29-92 



0-00680 



8 



II 



Greenwich 



8 



II 



39-0 



0-00301 









11 



Cambridge 



8 



II 



28-1 



0-00283 



33-72 



0-00402 



9 



II 



Greenwich 



9 



II 



37-6 



0-00237 









II 



Cambridge 



9 



II 



29-3 



0-00216 









II 



Dorpat 



9 



II 



36-9 



0-00226 



34-73 



0-00381 



10 



II 



Greenwich 



10 



II 



40-3 



0-00190 



40-30 



0-00190 



11 



11 



Greenwich 



11 



II 



36-2 



0-00173 









II 



Dorpat 



11 



II 



25-6 



0-00152 



31-24 



0-00232 

















h. m. s. 







Final 



Result, Turtle Is 



iland. 



Wes 



t of Greenwi 



eh, 



5 33 31-82 



0-02757 





Proba 



ble error. 









+ 



1-81 





^") 



