on the Distribution of the Magnetic Intensity. 



31 



OBSERVATIONS AT FORT GEORGE, continued. 



These Observations were made in the same place with those of Cylinder No. I. 

 FLAT NEEDLE. First Arc 20. FLAT NEEDLE. First Arc 20. 



REDUCTION OP THE OBSERVATIONS MADE AT FORT GEORGE. 



CYLINDER, No. I. 



July 17- At 1 8 P. M. red. Time of 300 vibrations with flat needle = 1053-8 Log. = 3-0227582 

 12 18 P. M. red. Time of 300 vibrations, cylinder, No. I. = 826-625 Log. 2-9173086 



Log. reduction of the flat needle to Cylinder, No. 1. = 0-1054496 



