Page:Proceedings of the Royal Society of London Vol 69.djvu/67

Rh Scale.

.Aperture.

Average.

Corrected.

White.

Percent.

Log of ratio.

10

3 '5 3-2

3-3

_

81-2

4-07

-1-391

15

4-0 - 4-0

4-0

85-4

4-68

-1-329

20

7 '5 8-0

7'8

87-0

9-07

-1-042

25

13-5 13-5

13-5

86-6

15-6

-0 806

30

19-0 18-2 20-0

19-0

83-5

22-8

-0-642

35

23-0 23-2

23-1

77-2

29-9

- -524

40

26-0 28-0 27-0

27-0

69-3

38-9

-0-410

28 -5 26 -5

45

3-1 28 5

29-0

64-4

45-0

-0-346

50

28 -0 28 -0

21-0

57-3

48-8

-0-312

55

21-0 22-0

21-5

54-7

39-3 -0-406

Curve No. 23. IV. Very heavy rubbing of tbe same ink.

Scale.

Aperture.

Average.

Average corrected from curve.

White.

Per cent.

Log of ratio.

10

1-5 1 '5

1-5

1-5

81-2

1-85

-1-732

15

2-0 2-0

2-0

1-9

85-4

2-12

-1-674

20

2-0 2-0

2-0

2-1

87-0

2-42

-1-616

25

1-5 1-7

1-6

2-2

86-6

2-55

- 1 -594

30

2-5 2-3

2-4

.

83-5

2-88

-1-541

35

3-8 4-0

3-9

77-2

5-06

-1-2U6

40

6-1 6-6 6-2

65

.

69-3

9-37

-1-028

45

8-5 8-8

8-6

64-4

13-35

-0-874

50

8-2 7-5

7'9

57-3

13-77

-0-861

55

6-5 6 -5

6-5

54-7

11-85

-0-926

Ill

IV

Ill

Scale.

I

III

II

m

Katio v.

Katio.

Ratio.

10

15

(1-77)

(1 -00)

20

2-05

1-11

25

2-05

(l-98)

1-15

30

2-24

2-41

1-16

35

2-20

2-42

1 -16

40

2-27

2-51

1-21

45

2-26

2-54

1-23

50

1-95*

2-76*

l-23

55

(2 -61)

2-27

(1-48)

Mean ....

2-16

2-45.

1-18

These two are the only ones which have been corrected from the curve.