31 72 29 47 26 62 26 60 24 43 23 67 24 98 30 63 30 16 26 70 25 70 24 27 22 42 2322 23.75 24 16 25 30 32 62 30 14 26 79 27.33

28.58 23.75 24.45

25.45

18.78

29.32

31.32

29.90

26.89

22 94 23 18 24 50 24.56

26.99

29.51

30 70 26 97

25.34

23.15 25.18 25 35 25 26 2276 29.06

27.10

26.41

38.50 36.20 37 52 38 82 37 63 39 03 39.60 27-20 23.42 24.02

34.92

38 08 37 45

37.70

37.79

22.60 22 94 22 40 23.85 22 17 22 50 25 70

38.50

40 .19

41.25

40 69 37 75 37 68 40 54 38 10

40.59

40 28

Degrees of Hardness.

One degree = one part of Ca"CO3 (or its equivalent) in 100,000 parts of the waters. The columns marked with the letter (a) show the degrees of " Permanent;" those marked (3) of " Temporary;" and those marked (y) of "Total" hardness.