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58 

2.35    [[underline]] Thursday, March 26, 1908 [[/underline]]

North Polar Sequence 
copied  AC 9300
Scale N
          Exp +90°         |          Exp +85°
    A  |   0.6 0.4          0.4  |    B 2.3 2.1       2.1
    a' |   3.7 3.5 3.9 3.5 | 3.50 00 | E 3.8 3.6       3.6 
    C  |  2.3 2.1    |    2.1    |   A 0.5 0.3       0.3 
    E  |   2.9 2.7   |     2.7   |   a' . 5.75.3 4.9 5.10  22
    G   |  4.0 3.8 4.5 4.1|  3.95  2 1 | C 3.7 3.5       3.5  
    D  |   3.2 3.0     |     3.0   |  D 4.5 4.3       4.3 
    F  |   3.7 3.5 3.9 3.5r| 3.50 00 |  G 5.0 4.8 5.2 4.8 4.5 4.70 112 
   a^2 |  4.9 4.7 4.9 4.5 4.9| 4.70 0 2 2 | t 4.8 4.6 4.8 4.4 4.4 4.47 111 
    B  |   1.5 1.3    |      1.3   |    a^5   7.6 7.2 6.8 7.00 2 2
   a^5  |      6.6 6.2 5.7 | 5.95 2 3 | c^4   8.7 8.3 8.6 8.45 1 2
   c^4  |      7.87.47.6  7.50 1 1|  b'    7.9 7.5 7.7 7.60 .11
   b^2  |        7.8 7.4 7.2 | 7.30 1 1 | c'    8.7 8.3 8.6 8.45 1 2
   b^3   |       7.7 7.3 7.0 | 7.15 1 2 | a^3   6.0 5.6 5.6 5.60 0 0
   a^3   |       4.9 4.5 4.8 | 4.65 1 2 | a^4   6.1 5.7 5.8 5.75 1 0
    b'  |        6.8 6.4 6.5|  6.45 0 1 | a^2   5.9 5.5 5.6 5.55 1 0
   a^4  |        5.4 5.0 4.8  |4.90 1 1 | b^2   8.7 8.3 8.5 8.40 1 1
   c^5  |        8.9 8.5 8.8  |8.65 1 2 | b^3   8.6 8.2 7.9 8.05 2 1
    c'  |       8.0 7.6 7.7 | 7.65 0 1 | c^2         8.8 8.8  
   c^3  |      8.8 8.4 8.6 | 8.50 1 1  |c^7         9.6 9.6 
   c^2   |      8.6 8.2 8.2|  8.20 0 0 | c^6         9.7 9.7
   c^6  |        9.1 8.7 9.0 | 8.85 1 2 | c^3         9.4
[[formula]]
   c^7  |              8.9 | 8.9   |    f'         10.2
    d   |              9.1 |   |      |   d           9.8
    f'  |              9.7 |   |         |  e           9.9
[[[formula]]
    e  |              9.6   |   |     f^2          n.s.
   f^2  |             10.1  |   |      c^5         superposed


59

Thursday, March 26, 1908

North Polar Sequence
Copied      AC 9300
Scale N

Exp. +80°  | Exp. +75

C | t.p. | C | t.p.
D | t.p. | D | t.p
B 2.2 2.0 | 2.0 | B | t.p.
E | 4.7 4.5 4.8 4.4 | 4.45 1 0 | E | t.p.
F | 5.0 4.6 4.9 | 4.75 2 1 | A | t.p.
A | 1.0 0.8 | 0.8 | im. v.p. F | 5.8 5.4 [[strikethrough]] 6 [[/strikethrough]] 5.3 | 5.35 0 1
G | 4.9 4.5 4.9 | 4.70 2 2 | a^[[3]]* | 6.8 6.4 | 6.20 
a^[[5]] | 7.5 7.1 7.5 | 7.30 2 2 |  b^[[3]] 7.9 7.5 7.8 | 7.65 1 2
c^[[4]] | superposed | c^[[5]] | 9.0 8.6 8.9 | 8.75 2 1
a' | 6.0 5.6 5.6 | 5.60 0 0 | a' | t.p.
b' | 7.8 7.4 7.7 | 7.55 2 1 | b' | 7.7 7.3 6.9 | 7.10 2 2
c' | 8.6 8.2 8.5 | 8.35 2 1 | G [[strikethrough]] 8 [[/strikethrough]] 5.9 5.5 [[strikethrough]] 6 [[/strikethrough]] 5.5 | 5.50 0 0
c^[[7]] | 9.2 | 9.2 | a^[[3]]* | 6.2 5.8 6.2 | 6.00 2 2 6.20
a^[[2]] | 6.8 6.4 5.9 | 6.15 2 3 | a^[[5]] | 7.5 7.1 6.8 | 6.95 1 2
a^[[4]] | 6.6 6.2 5.7 | 5.95 2 3 | c^[[4]] 8.6 8.2 8.2 | 8.20 0 0
b^[[3]] 7.9 7.5 7.8 | 7.65 1 2 | c^[[2]] | 8.8 8.4 8.7 | 8.55 2 1
a^[[3]] | 6.9 6.5 [[strikethrough]] 5 [[/strikethrough]] 6.7 | 6.60 1 1 | a^[[2]] | [[strikethrough]] 8 [[/strikethrough]] 6.0 5.6 5.7 | 5.65 0 1 
b^[[2]] | 8.6 8.2 7.9 | 8.05 2 1 | b^[[2]] 8.5 8.1 8.1 | 8.10 0 0
c^[[5]] | 9.2 8.8 9.1 | 8.95 2 1 | [[strikethrough]] b^[[3]] [[/strikethrough]] a^[[4]] | 6.8 6. [[strikethrough]] 2 [[/strikethrough]] 4 6.4 | 6.40 0 0
c^[[3]] | 9.0 8.6 8.9 | 8.75 2 1 | c' | 8.3 7.9 7.7 | 7.80 1 1
c^[[2]] | 8.8 8.4 8.6 | 8.50 1 1 | c^[[3]] | 8.9 8.5 8.8 | 8.65 1 2
c^[[6]] | 9.2 8.8 8.9 | 8.85 0 1 | d | 9.1 | 9.1 .a
f' | 9.7 |   | f' | im. def. perhaps 9.9 | 9.9 .a
d | 9.3 |   | e | 9.6 | 9.6 .a
e | 9.6 |   | c^[[7]] | 9.4 |   |
f^[[2]] | superposed | c^[[6]] | 8.9 |   |
|   |   | f^[[2]] 10.2 ident. not cert. perhaps superposed
[[formula]]  [[formula]]

*a^[[3]] measured twice; [[strikethrough]] take [[/strikethrough]] use mean 6.20. Discordance probably due to distance of image from center of plate.

M.E.H.