TERRESTRIAL MAGNETIC INTENSITY. 



Table VI. 



15 



FLAT NEEDLE. 



Place. 



Date. 



Mean 

 Time. 



No. of 



Vibrations 

 Observed. 



observed r^}^„ 



Arc* 



Temp. 

 Reaum. 



Corrected 

 Time 100 

 Vibration. 



Intensity 

 P*ris = I. 



Time. 



meter. 



a. 



m. 





1832. 



h m 





s 



s 











s 





Edinburgh, . . . 



June 2. 



11 39 



300 



1075.97 



+ 13 



20 



90 



15.95 



856.54 



.839 



Brussels, .... 



July 9. 



12 55 



800 



1008.39 



+ 17 



20 



100 



23.1 



833.38 



.965 



Konigstuhl, near \ 

 Heidelberg, . J 



July 28. 



11 17 



100 



327.84 



+ 23 



10 



110 



15.1 



326.06 



1.012 



Heidelberg, . . . 



July 28. 



11 47 



100 



327.30 



+ 23 



10 



110 



15.1 



825.52 



1.015 



Bruhl, 



Aug. 1. 



11 34 



100 



332.80 



+ 27 



10 



140 



17.0 



330.72 



.984 



Bruhl, ..... 



Aug. 1. 



11 47 



100 



333.51 



+ 27 



10 



140 



17.0 



331.43 



.980 



Saleve Summit, . . 



Aug. 17. 



2 14 



100 



319.10 



+ 20 



10 



120 



17.4 



317.14 



1.073 



Geneva, .... 



Aug. 20. 



11 55 



100 



319.23 



+ 27 



10 



120 



22.2 



816.80 



1-076 



Mont Breven, . 



Aug. 22. 



1 52 



100 



315.89 



+ 27 



10 



130 



16.2 



314.01 



1.095 



Chamouni, . . . 



Aug. 23. 



12 56 



100 



318.83 



+ 27 



10 



130 



18.6 



316.71 



1.077 



Jardin, .... 



Aug. 25. 



12 45 



100 



317.47 



+ 27 



10 



130 



11.8 



316.04 



1.082 



Chamouni, . . . 



Aug. 26. 



1 48 



100 



318.11 



+ 27 



10 



140 



15.3 



317.01 



1.075 



Aoste, 



Aug. 29. 



4 29 



100 



317.00 



+ 27 



10 



140 



16.1 



315.12 



1.089 



St Bernard,' . . . 



Aug. 31. 



8 46 



100 



318.93 



+ 27 



10 



140? 



9.1 



317.69 



1.072 



St Bernard, . . . 



Aug. 81. 



9 



100 



319.84 



+ 27 



10 



140 



9.6 



317.84 



1.071 



St Bernard, . . . 



Aug. 31. 



10 13 



100 



318.77 



+ 27 



10 



140 



11.3 



317.88 



1.070 



Martigny,' . . . 



Sept. 1. 



8 54 



100 



318.81 



+ 27 



10 



100 



14.5 



317.13 



1.075 



Martign_y, . . . 



Sept. 1. 



9 7 



100 



318.84 



+ 27 



10 



100 



14.6 



317.14 



1.075 



Interlaken, . . 



Sept. 10. 



5 4 



100 



321.20 



+ 14 



JO 



140 



14.05 



319.52 



1.061 



Interlaken, . . . 



Sept. 10. 



5 16 



100 



320.93 



+ 14 



10 



150 



14.05 



319.18 



1.063 



Schmadribach, . . 



Sept. 12. 



12 59 



100 



319.69 



+ 14 



10 



130? 



11.06 



318.32 



1.069 



Grindelwald, . . 



Sept. ] 4. 



10 29 



100 



319.80 



+ 14 



10 



130 



14.45 



318.12 



1.071 



Grimsel, .... 



Sept. 18. 



8 6 



100 



320.53 



+ 14 



10 



150 



6.55 



319.54 



1.062 



Grimsel, . . 



Sept. 18. 



8 18 



100 



319.99 



+ 14 



10 



150 



7.0 



318.98 



1.066 



Grimsel 



Sept. 18. 



8 29 



100 



820.27 



+ 14 



10 



150.? 



7.4 



319.25 



1.064 



Miinster, .... 



Sept. 18. 



5 58 



100 



319.84 



+ 14 



10 



140 



9.5 



318.()0 



I.O08 



Gemmi Summit. 



Sept. 21. 



9 12 



100 



319.79 



+ 14 



10 



140 



9.65 



318.54 



1.069 



Grindelwald, . . 



Sept. 23. 



7 13 



100 



320.14 



+ 14 



10 



120 



6.7 



319.21 



1.065 



Grin del wajd, . . 



Sept. 23. 



9 30 



100 



.320.46 



+ 14 



10 



140 



8.2 



319.33 



1.064 



Faulhorn, . . . 



Sept. 24. 



8 43 



100 



820.69 



+ 14 



10 



150 



7.5 



319.61 



1.062 



Faulhorn, . . . 



Sept. 24. 



8 54 



100 



821.03 



+ 14 



10 



140 



7.0 



820.02 



10.60 



Faulhorn, . . . 



Sept. 24. 



9 6 



100 



321.09 



+ 14 



10 



140.? 



6.8 



320.11 



1.059 



Surennes, .... 



Sept. 28. 



11 20 



100 



321.39 



+ 14 



10 



140 



12.65 



319.85 



1.062 



Klus, near Altorf, . 



Sept. 28. 



5 49 



100 



321.13 



+ 14 



10 



130 



9.85 



319.86 



1.061 



St Gothard, . . . 



Sept. 30. 



9 17 



100 



320.73 



+ 14 



10 



130 



6.3 



319.81 



1.062 



Locarno, .... 



Oct. 2. 



2 52 



100 



319.50 



+ 14 



10 



150 



18.55 



317.39 



1.079 



Bellaggio, . . . 



Oct. 8. 



8 38 



100 



317.51 



+ 14 



10 



130 



18.4 



815.93 



1.090 



Wallenstadt, . . 



Oct. 12. 



10 7 



100 



321.64 



+ 14 



10 



130 



13.05 



320.03 



1.063 



Lucerne, .... 



Oct. 15. 



10 26 



100 



321.94 



+ 14 



10 



140 



9.0 



320.74 



1.058 



Geneva, .... 



Nov. 10. 



11 58 



100 



821.10 



+ 21 



10 



130 



7.0 



320.08 



1.067 



Geneva, .... 



Nov. 10. 

 1833. 



12 10 



100 



321.16 



+ 21 



10 



130 



7.0 



820.14 



1.066 



Edinburgh, . . . 



May 7. 



5 14 



300 



1094.00 



+ 8 



20 



120 



17.65 



362.20 



.840 



Edinburgh, . . . 



May 7. 



5 36 



100 



864.34 



+ 3 



10 



120? 



17.0 



362.2 



.840 



Paris, 



June 11. 

 1835. 



2 



300 



1005.17 





20 



150 



20.8 



332.34 



1.000 



Edinburgh, . . . 



May 4. 



1 53 



100 



371.84 



... 



10 



80 



9.0 



870.65 



.840 



Edinburgh, . . . 



May 4. 



2 7 



100 



371.39 



... 



10 



120 



8.7 



370.15 



.842 



Paris, 



June 13. 



4 8 



100 



342.19 



— 40.5 



10 



130.? 



19.9 



340.04 



1.000 



Paris, 



June 13. 



4 22 



100 



342.00 



— 40.5 



10 



ISO.? 



19.8 



840.10 



1.000 



Pic de Bergons,' 



July 18. 



4 23 



100 



824.63 



+ 20 



10 



150 



14.95 



322.81 



1.112 



Pic de Bergor.s,* 



July 21. 



11 17 



100 



324.81 



+ 20 



10 



120 



15.0 



328.04 



1.111 



Pic de Bergons,* 



July 21. 



11 31 



100 



324.84 



+ 20 



10 



130 



15.1 



323.04 



1.111 



Luz, 



July 28. 



11 44 



100 



823.40 



+ 20 



10 



130 



19.0 



321.23 



1.124 



Luz, 



July 28. 



11 58 



100 



323.48 



+ 20 



10 



130? 



19.0 



321.31 



1.123 



Luz, 



July 28. 



12 18 



100 



323.40 



+ 20 



10 



80 



19.0 



321.34 



1.128 



Gavamie, .... 



July 29. 



12 32 



100 



823.43 



+ 20 



10 



140 



19.0 



321.26 



1.124 



Ste Marie, ^ . . . 



Aug. 7. 



10 48 



100 



823.98 



+ 20 



10 



140 



19.55 



821.68 



1.121 



Ste Marie, ^ . . . 



Aug. 7. 



11 7 



100 



324.09 



+ 20 



10 



140 



19.85 



821.82 



1.120 



Pic de Midi, . . . 



Aug. 8. 



11 5 



100 



323.71 



+ 20 



10 



180^ 



11.25 



322.28 



1.117 



Pic de Midi, . . . 



Aug. 8. 



11 22 



100 



324.03 



+ 20 



10 



150 



10.4 



322.64 



1.115 



Breche de Roland,' 



Aug. 11. 



11 17 



100 



324.37 



+ 20 



10 



140 



12.6 



822.78 



1.114 



* a. indicates the initi 



al semi-arc of 



vibration ; 



m. the num 



bar of vibrations requ 



ired t 



reduce it to half its amou 



Qt. 



' The dipping-needle a 



t first near thf 



instrumen 



t. 



^ Local disturbance s 



jspect 



ed. 3 Small compass ir 



1 pocket. 



* Unexceptionable. 



"^ Unste 



ady. 



6 Goc 



d. ' Exti 



emel^ 



tremulous. Gusts of wine 



i. 



