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79 June 23, 1894 Meas. of Iceland spar plates (Cont.) Plate I 15253 1. a 4.8 ^[[=5.1]] 5.1 a1 7.0 ^[[=7.3]] 7.4 b 5.4 ^[[=5.7]] 5.6 b1 - 7.7 c 5.8 ^[[=6.1]]6.2 c1 [[strikethrough]] 6 [[/strikethrough]] - 8.2 d 6.5 ^[[6.8]] 6.7 d1 - 8.5 e 7.2 ^[[=7.5]] 7.5 e1 - 8.8 f - 7.8 f1 - 9.2 p - 8.3 p1 - 9.7 2. a - 7.5 a1 - 8.8 b - 7.7 b1 - 9.0 c - 8.0 c1 - 9.4 d - 8.5 d1 - 10.0 e - 8.8 e1 - 10.3 f - 9.2 p - 9.6