352 Observations of Vibrations for the Absolute Horizontal Intensity, 1846-7. 



Gijttingen 

 Mean Time. 



d. h. 



1846. 

 June 24 4 

 June 24 7 

 Dec. 31 2 



1847. 

 Jan. 1 3 

 May 31 10 

 June 15 7 

 Sept. 10 21 

 Sept. 10 23 

 Sept. 12 22 

 Sept. 12 23 



Bar. 



F 

 F 



F 



F 



M 

 M 

 M 

 M 

 B 

 B 



Ring 



on or 



off. 



On 

 Off 

 Off 



On 

 Off 

 Off 

 On 

 Off 

 On 

 Off 



No. of 

 Vibra- 

 tions. 



323 

 369 

 357 



319 

 351 

 357 

 319 

 357 

 219 

 357 



Semiarcs 



of 

 Vibration. 



leto 3 



23— 4 

 25— 3 



23— 5 

 35—10 

 50—15 

 53—24 

 42—12 

 32—17 

 22—10 



Temp. 



of 

 Bar. 



65-4 

 67-5 

 48-0 



44-8 

 71-3 

 59-6 

 49-7 

 57-1 

 550 

 60-1 



Observed 



Time of 



One 



Vibration. 



12-14708 

 4-96988 

 501310 



12-20431 

 5-03812 

 5-08227 



12-51917 

 5-10007 



14-17608 

 5-75353 



BiriLAE. 



Reading 



Tempe- 



Corrected. 



rature. 



Sc. Div. 



" 



562-4 



59-3 



568-7 



60-5 



560-9 



40-5 



563-8 



41-1 



574-8 



69-1 



576-7 



58-2 



537-3 



53-2 



545-0 



53-8 



527-6 



52-2 



524-9 



52-1 



Coefficients for 



Torsion, 



002143 

 001112 

 000834 



001431 

 000300 

 000300 

 002132 

 000953 

 001807 

 000871 



Tempera- 

 ture, = q. 



0-000300 

 •000300 

 •000300 



-000300 

 -000100 

 -000100 

 •000100 

 •000100 

 •000090 

 -000090 



Induction, 

 S m 



00569 

 00569 

 00569 



00569 

 00417 

 00417 

 00417 

 00417 

 00627 

 00627 



Kate 



of 



Chron. 



-1-6 

 -1-6 

 -4-0 



-4.0 

 -4-0 

 -4-0 

 -5-0 

 -50 

 -5-0 

 -5-0 



dimensions op the inertia rings. 



External Diameter, 

 Internal Diameter, 



Thickness, 



Weight, 



For Magnet P. 



3-635 inch. 



2-971 inch. 



0'142 inch. 

 1074-77 grains. 



For Magnet M. 



3-515 inch. 



2-912 inch. 



0-187 inch. 



1254-50 grains. 



For Magnet B. 



3-604 inch. 



2-932 inch. 



0-172 inch. 



1299-40 grains. 



See footnote to the previous page. 



