178 E. LANCASTER JONES 



TABLE IX 
N\A] + m — Av’ | + m” — 
8) 1 39 | 3 15 
4 2 
2 5 
17 
—2 
5 78 
6 115 
193 
—32 
I 4 
4 2 
7 210 
9 | 66 
150 
—21 
I 4 
3 15 
7 210 
12 28 
257 
Se) 
2 7 
6 IIs 
8 83 
Io | 51 
470 140 
ike = 23 =a = 
N from column i. The result is m’ for this key point. In the fourth 
column headed A” are set down the numbers of the second-remove 
points in order. These are used to obtain m’’, m’”’, m‘¥ in succession 
according to equation (10) by means of the subsequent columns 
headed +m’’—, +m’’’—,--- , and the values previously obtained 
in column m’ for each second-remove point. 
The procedure is thus to set down the key, first-remove and second- 
remove points in columns 2 and 4, then the values N in column 1; 
compute m’ for every key point and use the values so obtained in 
column 5 to get m”’ for each point; use these latter values to get m’”’, 
and these to get mi’, and so on. The values actually obtained are 
838 
