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100 

Wednesday March 20, 1912

3:35  North Polar Sequence
Scale M  Measures on Isochromatic Plate I 28693

Scale 1  Scale 2 

F| 2.7 2.9
A1| 2.8 [?].0 t.b. |
A3| 2.7 2.9 |
A5| t.p. |
      4.3 4.4 
B1| 4.1 4.2 4.6 4.7 |
      6.1  5.9
B2| 5 [[5 /strikethrough]].9 5.7 5.8 5.9 |
B3| 3.6 3.8 t.b. |
C1| 5.8 6.0 5.9 |
C2| 6.7 6.9 6.9 |
C3| 6.9 7.1 7.0 |
C4| t.p. t.p. |
C5| 4.8 5.0 5.0 |
C6| t.f. 7.1 |
C7| 6.0 6.2 6.3 |
D | t.f. 7.9 |
E | 6.9 7.1 7.1 |
F1| 7.9 | 
F2| 9.5 |
F3| n.s |
67| 8.8 |
75| 8.4 |
85| 10.1 |
197| 8.7 |
227| 6.9 7.1 7.1 |
386| 8.1 | 
408| 9.2 | 

Remeasured | Mean. |

SC 1 | SC 2 |

2.4 | 2.6 |  2.75 [[2 /strikethrough]] 1 2[underlined]|
2.7 | 2.9 |  2.95 0 1 |
2.9 | 3.1 | very poor  3.00 1[underlined 1 |

4.50 2[underlined] 1[underlined] 1 2 |
5.92 [[0 /strikethrough]]2 0 1[underline] 0 |
3.7 3.9 | 3.85 0 1 |
5.95 0 1[underlined] |
6.90 0 0 |
7.05 1 0 |
5.00 0 0 |
7.3 | 7.20 1[underlined] 1 |
6.25 0 1 |
7.9 | 7.90 0 0 |
9.3 | 9.40 1 1[underlined]

8.9 | 8.85 0 1 |
8.4 | 8.40 0 0 |
10.1| 10.10 0 0|
8.7 | 8.70 0 0 |
7.10 0 0 |
8.0 | 8.05 1 0 |
9.4 | 9.30 1[underlined] 1 |





101

Wednesday March 20, 1912

North Polar Sequence
Scale M  Measures on Isochromatic Plate I 28693 cont.

Prismatic Comparisons

[[6 column table]]

|   | Sc 1 | Scale 2 |   | Scale 1 | ^[[Remeasured]] Scale 2 | Mean |
A | 3.6 3.8 | t.b. |   | 3.6 3.8 |   | 3.80 0 0
F | t.f. | 9.3 |   | 9.1 | 9.20 1 [[underline]] 1 [[/underline]]
a^[[1]] |   | 9.8 |   | 9.7 | 9.75 0 [[underline]] 1 [[/underline]]
a^[[2]] |   | 7.6 |   | 7.2 poor | 7.40 2 [[underline]] 2 [[/underline]]
a^[[3]] |   | 10.1 |   | 10.1 | 10.10 0 0
a^[[4]] |   | [[strikethrough]] 10.0 [[/strikethrough]] reject def? |   |   | n.s. |   |   |
a^[[5]] |   | 9.4 |   |    | 9.5 | 9.45 0 1
f^[[1]] |   | n.s. |   |   |   |   |   |
f^[[2]] |   | n.s. |   |   |   |   |   |
f^[[3]] |   | n.s. |   |   | n.s. |   |   |
c^[[1]] |   | n.s. |   |   |   |   |   |
c^[[4]] |   | n.s. |   |   |   |   |   |

M.D.R.

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