228 Proceedings of the Royal Irish Academy, 
VERTICAL FORCE. TOTAL FORCE. 
X 
X tan d. 
cos Q 
1888. 
Va. 
Kew. 
V.*- K. 
Va. 
Kew. 
V.-K. 
March, 
0-4481 
0-4397 
+ 0-0084 
0-4807 
0-4755 
+ 0-0052 
April, . 
0-4485 
0-4392 
+ 0-0093 
0-4811 
0-4751 
+ 0-0060 
May, . 
0-4471 
0-4399 
+ 0-0072 
0-4799 
0-4758 
+ 0-0041 
June, . 
0-4477 
0-4389 
-h 0-0088 
0-4804 
0-4749 
+ 0-0055 
July, . 
0-4477 
0-4390 
+ 0-0087 
0-4804 
0-4749 
+ 0-0055 
Aug., . 
0-4478 
0-4393 
+ 0-0085 
0-4805 
0-4752 
+ 0-0053 
Sept., . 
0-4474 
0-4390 
+ 0-0084 
0-4800 
0-4748 
+ 0-0052 
Oct., . 
0-4491 
0-4389 
+ 0-0102 
0-4817 
0-4748 
+ 0-0069 
Nov., . 
0-4489 
0-4390 
+ 0-0099 
0-4816 
0-4749 
+ 0-0067 
Dec, . 
0-4468 
0-4388 
+ 0-0080 
0-4796 
0-4747 
+ 0-0049 
Means, 
0-4479 
0-4392 
+ 0-0087 
0-4806 
0-4750 
+ 0-0056 
In Plate XV. will be found the plotted curves embodying these 
Tables. From the large amounts of variations it is evident that more 
observations are required before any satisfactory deductions can be 
made from them. 
