200 Observations of the Dip of the Needle [No. SO. 



Observations of the Dip of the Needle taken at different stations 

 in Southern India during the month of December 1843 and 

 January and April 1844. 



Place 



D «g a, 



Poothocottah. 

 Lat. 10° 22' 50" N 

 Long. 78° 52' 5i"E 

 Mean Dip 0° 57' 0" 



1843. 

 Dec. 

 19th. 



20th. 



23d. 

 3|a. m. 



70°. 



7|a. M. 

 70°. 



9$ A.M. 



78°. 



Poles Direct. 



Read- 

 ings. 



0°. 13' —0°. 13 

 + 1. 4 +1. 5 



Read- 

 ings. 



Poles Reversed. 



+0. 45 

 +0. 12 



0. 27 



1. 0 



1. 47 



1. 55 



0. 43 



1.21.25 



1 —0. 8 



+0. 45 



+0. 44 



+0. 16 



0.24.25 



1 —0. 

 +0. 

 +0. 44 



+0. 2 +0. 00 



+0. 45 



+0. 12 



0. 27.25 



1. 0 

 1. 45 

 1. 55 

 0. 43 



1.20.75 



-0. 6 



+0. 40 



+0. 45 



4-0. 11 



0.22. 5 



Read- 

 ings. 



1°. 7' 

 2. 2 

 1. 48 

 1. 3 



1. 3 



-0.~T 



+1. 13 

 +0. 55 

 4-0. 4 



Read- 

 ings. 



1°. 5' 

 2. 4 

 1. 48 

 1. 2 



1.29.75 



Dip. 



-0. 5 



4-1. 14 



4-0. 55 



4-0. 7 



0.20.5 



0. 58 



1. 52 

 1. 48 

 0. 45 



1.20.75 



-1. 28 



-0. 55 



-0. 37 



-1. 47 



0. 32.75 



1. 35 

 1. 56 

 1. 53 

 1. 22 



1.41.5 



l.~16~ 



3. 55 

 1. 55 

 1. 7 



1.33.25 



0. 47 —0. 20 —0. 18 



1. 53 +1. 19 4-1. 17 

 1. 49 

 0. 47 



— 0. 3 

 4-0. 35 

 4-0. 44 



0.19. 0 



0. 31.75 



1. 30 

 1. 58 

 1. 48 

 1. 20 



1.39. 0 



1. 17 



1. 52 



2. 00 

 1. 2 



1.32.75 



1.19. 0 



-1. 35 



-0. 59 



-0. 44 



-1. 45 



1.11.75 — 1.15.75 



1. 9 



1. 55 



1. 57 



0. 58 



1.29.75 



1. 4 



1. 50 



1. 53 



1. 1 



1.27. 0 



— 0. 15 —0. 13 



4-0. 49 

 +0. 39 

 4-0. 6 



0.19.75 



4-0. 44 

 4-0. 41 

 +0. 4 



0.19. 0 



+0. 43 

 4-0. 10 



0.28. 0 



2. 23 



3. 25 

 3. 42 



2. 38 



3. 2. 0 



0. 4 



0 52 



0. 54 



0. 00 



0.27. t 



4-0. 43 

 4-0. 10 



0.28. 0 



2. 33 



3. 31 

 3. 40 



2. 45 



3. 7.25 



1. 28 



1. 54 



2. 03 

 1. 5 



1.37. 5" 



0. 2 



0. 58 



0. 50 



0. 5 



0.28.75 



1. 27 



1. 58 



2. 0 

 1. 9 



0°. 58'. 5 



0°. 56' 



i°. r.8i 



0°. 58'. 37 



J°. 53 '.94 



0°. 55 '.44 



0°. 58 '.25 



1.38. 5 '0°. 58' 



