CLOSENESS OF LINES. 
Fig. 24 . 
of 15 bands, which has been examined and calculated by Mr. Da 
La Rue. 
Series. 
Number 
of lines. 
Distance in relation to 
the English inch. 
Number of lines in 
an English inch. 
I 
7 
0*00008880 
11261 
2 
8 
0*00007548 
13248 
3 
9 
0*00006482 
15427 
4 
IO 
0*00005506 
18162 
5 
ii 
0*00004884 
20475 
6 
!3 
0*00004262 
23463 
7 
15 
0*00003552 
28153 
8 
17 
0*00003108 
3*175 
9 
19 
0*00002664 
37537 
IO 
21 
0*00002442 
40950 
ii 
23 
0*00002220 
45°45 
12 
24 
0*00002113 
47326 
13 
26 
0*00001998 
50050 
■ 14 
27 , 
o'ooooi 8 01 - - 
. 52882 
15 
29 
0*00001776 
56306 
