Observations of Vibrations for the Absolute Horizontal Intensity, 1844. 160 





Date. 





N. End of 



Magnet moving E. 



N. End of 



Magnet moving W. 



BlFILAR. 





No. 



of 



Vib. 



Time 



of 



Transit. 



No. 



of 



Vib. 



Time 



of 



Transit. 



Time of 

 one 

 Vib. 



No. 



of 



Vib. 



Time 



of 



Transit. 



No. 



of 



Vib. 



Time 



of 



Transit. 



Time of 

 one 

 Vib. 



Time 



of 



Obs. 



Read- 

 ing 

 Cor. 



Ther- 

 mome- 

 ter. 











h. m. s. 



2 50 31-2 



50 



h. m. s. 



3 3 27-3 



15-522 



1 



m. s. 

 50 47-6 



5t 



m. s. 

 3 44-2 



15-532 



h. m. 



2 52 



Sc. Div. 



531-8 



36-1 







6 



52 4-5 



56 



5 0-5 



520 



5 



51 49-7 



55 



4 46-1 



528 



2 57 



533-3 









10 



53 6-7 



60 



6 2-5 



516 



11 



53 230 



61 



6 19-2 



524 



3 2 



5351 









16 



54 39-7 



66 



7 35-3 



512 



15 



54 25-0 



65 



7 21-2 



524 



7 



539-0 







Dec. 30 



20 

 26 



55 41-9 

 57 14-9 



70 

 76 



8 37-4 

 10 10-5 



510 

 510 



21 

 25 



55 58-2 

 57 0-5 



71 

 75 



8 54-3 



9 56-5 



522 

 520 



12 

 17 



534-8 

 535-2 



36-2 







30 



58 17-2 



80 



11 12-2 



500 



31 



58 33-7 



81 



11 29-5 



516 













36 



59 50-2 



86 



12 45-3 



502 



35 



59 35-6 



85 



12 31-5 



518 



Mean 



534-9 









,40 



3 52-2 



90 



13 47-3 



502 



41 



1 8-8 



91 



14 4-7 



518 













46 



2 25-3 



96 



15 20-2 



498 



45 



2 11-0 



95 



15 6-8 



516 













M 



;an observed ti 



me of 



one vibration 



= 15»-5155 



. Semi-arc of vibration, commencing 3°-6, ending 0°-9. Temperature 

 of magnet 37° - 7. 

































MAG. AND MET. OBS. 1844. 



2u 



