a2 C. COLERIDGE FARR. 
and from them in conjunction with my own it appears that the 
horizontal force is at present decreasing at the rate of -0003 C. 
G. 8S. units per annum. The inclination has also decreased very 
markedly, its rate being 1’ 21” a year. 
As regards the declination, without a photographic record it is 
difficult to arrive at any very accurate conclusion. Four obser- 
vations were made of this element, which are as follows :— 
H. M. ° / Wy 
April 27, 1892, at 10 6am, ..2.9) (590e22—em 
April 27, 1892, at 3 3 p.m., ..99>=43ieee 
May 10, 1892, at 10 2 a.m... 9 36 , 20mm 
May 10, 1892, at 2 30 pm., ... 9 40 450m 
On those days when an observation of both the horizontal 
intensity and the dip were made, the former was always taken in’ 
the morning and the latter in the afternoon. 
The value of the dip outside on April 22, 1892 was 62° 40’ 34”. 
Horizontal Horizontal , Horizonial | ae 
Intensity. Intensity. | Intensity. oe 
| (a) (b) Mean, J 
| 
Date. Total force. Dip. 
October 16, 1891 | 0:26058 0-26062 | 0-26060 
19, | el0s)) -2em4 Pe o6i09 
» 20, ,, | -26170| -26190| -26180 
» 21, , | -26145| -26150| -26148|  ... , nee 
» 22, ,, | -26051| -26057) -26054 | 0.49815 | 0-56218 | 62 23 24 
» 28, ,, | -26088| -26086| -26084) 49875 -56286 | 62 23 30 
November ll,,, | -26146 26153) -26150| -49992| -56415 |6223 11 
» 12, | -26048| -26053] -26051| -49824) -56228 | 62 28 49 
» 18, | -26135| -26142| -26138| -s0002| -56420|6224 7 
July, 1890* ae ae fee "2624 
Sept. 15, 1888+ ... a ae 26333 ee eh aids | 
Snir me ees Be a oii a fe ah bi 62 27 55 : 
MeO lies Lt hy. A : a8 se fe 62 27 26 
* Observed by the late Mr. J. W. Fell. t+ Observed by Mr. C. A. Flint, m.a. 
