MA.de at HUDSON OBSERVATORY. 



49 



II. Observed Transits of the Moon and Moon Culminating Stars, at Hudson 



Observatory. 



It is hoped these observations may furnish the means of determining the 

 longitude of the Observatory with some precision. At present I assume this 

 element to be 5h. 25 w. 425. west from Greenwich. The table will sufficiently 

 explain itself The stars observed are generally those indicated by the Nauti- 

 cal Almanac. In only two or three instances is there a deviation from this 

 rule. 



No. 



Date. 



Star. 



No. 



Wires 



Obs. 



Meridian 

 Transit. 



Clock's 

 Rate. 



No. 



Date. 



Star. 



JNo. 



Wires 



Obs. 



Meridian | Clocli's 

 Transit. Rate. 





1838. 







h. m. s. 



s. 











h. VI. s. \ s. 





Sep. 27 



^ Sagittarii 



2 



18 35 34-74 



+ 0-03 







S Geminorurn 



5 



7 10 45-96 





' 





a Sagittarii 



5 



18 45 15-95 









a^ Geminorurn 



5 



7 24 35-15 





1 





Moon 1 L. 



5 



19 20 5-99 







Mar. 23 



S Geminorurn 



5 



7 10 45-94 



— 0-21 







h^ Sagittarii 



5 



19 26 53-60 









a^ Geminorurn 



5 



7 24 34-63 







29 



4/ Capricorni 



5 



20 36 33-25 



— 0-20 



12 





Moon 1 L. 



5 



7 50 2-50 







■>; Capricorni 



5 



20 55 13-76 









6 Cancri 



5 



7 53 53 22! 



2 





Moon 1 L. 



5 



21 22 25-82 









9 Cancri 



5 



8 22 40-66 









y Capricorni 



5 



21 31 1000 







24 



£ Hydrae 



5 



8 38 30-62 



— 0-21 







5 Capricorni 



5 



21 38 9-00 





13 





Moon 1 L. 



5 



8 45 14-78 







Oct. 1 



a Aquarii 



5 



22 22 7-00 



+ 2-67 







1 Cancri 



4 



9 22-08 









% Aquarii 



5 



22 44 12.66 







25 



t Cancri 



5 



9 21.33 



— 0-48 



3 





Moon 1 L. 



5 



23 16 50.16 









q Cancri 



5 



9 10 15-26 







X Piscium 



3 



23 18 40-76 





14 





Moon 1 L. 



5 



9 36 11-14 





27 



y Capricorni 



3 



21 30 58-45 



— 1-39 







V Leonis 



5 



9 49 49-24 





4 





Moon 1 L. 



5 



21 54 46-82 









57 Leonis 



5 



9 58 48-74 







Nov. 13 



a Virginis 



3 



13 16 9-56— 1-25 





27 



1 Leonis 



5 



10 41 3-16 



— 0-01 



5 





Moon 2 L. 



5 



13 18 47-02 





15 





Moon 1 L. 



5 



11 8 27-28 







29 



I' Arietis 



5 



2 28 47-57 



— 1-37 







g Leonis 



5 



11 13 5-82 





G 



1839. 



Moon 1 L. 



5 



3 2 39-41 









V Leonis 



5 



11 28 58-36 







Jan. 23 



£ Arietis 



5 



2 49 12-20+ O-Oll 



16 



Apr. 18 



Moon 1 L. 



5 



6 26 54-31 



— 0-68 



7 





Moon 1 L. 



5 



3 17 55-05 









£ Geminorurn 



5 



6 34 15-87 









57 Tauri 



5 



3 37 7-79 





17 



19 



Moon 1 L. 



5 



7 29 32-63 



— 0-55 







A' Tauri 



5 



3 54 22-77 









)3 Geminorurn 



5 



7 35 41-67 







24 



'/! Tauri 



5 



3 37 5-59 



— 1-62 







£ Leonis 



5 



9 36 57-41 









A' Tauri 



5 



3 54 21-73 







20 



,3 Geminorurn 



5 



7 35 41-11 



— 0-51 



8 





Moon 1 L. 



5 



4 19 0-49 





18 





Moon 1 L. 



5 



8 27 19-67' 







t Tauri 



5 



4 31 45-87 







8 Caucri 



5 



8 35 45-881 







t, Tauri 



5 



4 52 3911 







1 Cancri 



5 



9 20-15 



9 



Feb. 19 



Moon 1 L. 



5 



3 21-26 



— 1-23 





21 Is Cancri 



4 



8 35 45-34'— 0.61 







a Tauri 



5 



4 26 37-56 







1 Cancri 



5 



9 19-31 







21 



v' Tauri 



5 



4 16 34-31 



— 1-21 



19 





Moon 1 L. 



5 



9 20 8-66 









* Tauri 



3 



4 32 28-74 









•K Leonis 



5 



9 22 45-27 





10 





Moon 1 L. 



5 



5 3 48-69 









4/ Leonis 



5 



9 35 11-24 









C Tauri 



5 



5 43 6-49 







23 



y Leonis 



5 



10 11 19-48 



4- 0-04 





Mar. 22 



X Aurigae 



3 



6 5 22-23 



+ 0-34 



20 





Moon 1 L. 



5 



10 54 16-36 





11 





Moon 1 L. 



5 



6 50 28-78 







24 



X Leonis , 



5 



10 56 56-72 



+ 0-04 



VII. N 



