MAGNETIC AL OBSERVATIONS. 



15 



Horizontal iutensity. Experiments of vibration. 



1856. August IG, P. M. Vibrating magnet D 3. 



No. 





 10 

 20 

 30 

 40 

 50 

 100 



No. 



Chronometer. 



300 

 310 

 320 

 330 

 340 

 350 

 200 



9 



9 



10 



10 



4 



23\0 

 49.5 

 150 

 41.5 



80 

 34.0 



0.5 



Time of 300 vibrations 



13"" 6^0 



65 

 5.5 

 60 

 6.5 

 60 



13 6.08 



Extreme scale readings. 





 100 

 200 

 350 



13.0 

 16.4 

 19.4 

 22.0 



47.0 

 43.6 

 41.0 

 38.0 



Temperature 77°. F. 

 Time of 1 vibration 2'. 6203. 



Horizontal intensity. Experiments of vibration. 



1856. August 16, P. M. Vibrating magnet D 3. 



No. 



Ciironometer. 





 10 

 20 

 80 

 40 

 50 

 100 



16" 



16 



17 



17 



18 



18 



20 



23 ^0 

 49.0 

 15.0 

 41.0 

 7.5 

 33.5 

 44.5 



No. 



304 

 314 



324 

 384 

 344 

 354 

 200 



Chronometer. 



29" 



30 



30 



30 



31 



31 



25 



39^5 

 6.0 

 32.0 

 58.0 

 24.5 

 51.0 

 7.0 



Time of 304 vibrations. 



13'" 16 = . 5 

 17.0 

 17.0 

 17.0 

 17.0 

 17.5 



13 17.0 



Extreme scale readings. 



50 

 100 

 200 

 354 



13.0 

 14.5 

 17.0 



20.5 



47.0 

 45.5 

 42.5 

 39.0 



Temperature 78°. F. 

 Time of 1 vibration 2».6217. 



1856. August 17, A. M. 



Vibrating magnet D 3. 



No. 







10 

 20 

 30 

 40 

 50 

 100 



Chronometer. 



No. 



2^ 53" 

 53 

 54 

 54 

 54 

 55 

 57 



l0^o 



36.0 

 2.0 

 28.5 

 55.0 

 21.0 

 32.0 



300 

 310 

 320 

 330 

 340 

 350 

 200 



Chronometer. 



3'' 6" 16'. 



42.0 

 8.5 



34.5 

 03 



20.7 



54.0 



Time of 300 vibrations. 



13" 



6^o 



6.0 

 6.5 

 6.0 

 5.3 

 5.7 



13 5 92 



Extreme scale readings. 





 50 

 100 

 200 

 300 

 350 



20.0 

 21 5 

 22.0 

 23.0 

 24 5 

 25.0 



40.0 

 38.5 

 38.0 

 36.7 

 35.5 

 35.0 



Temperature 78°. F. 

 Time of 1 vibration 2 '.6197. 



