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MONTHS.

Temper-
ature in

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Average
monthly
temper-

degrees, 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 atures for

Fahr.

55

29

26 years.

23

REPORT OF DEPARTMENT OF HEALTH.

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Average temp.

48

46

47

50 45 49

51

59

52 50 51

47

47 49 47 47 49 45

49 47 46

47

50

........

of each year.

Mean annual temperature, 26 years, 48.25° F.

Maximum, 100° F.-July, 1887. Minimum, -23° F.-December, 1872. Extreme range, 123° F.

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TABULATION OF MONTHLY PRECIPITATION, CHICAGO: 1871-1896.

MONTH.

1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884

January
February..

March

April

May
June.

July

4.13 0.68 2.56 3.47 0.96 3.22 1.91 1.31 0.54 3.53 0.87 1.55 1.74 1.39 1.45 0.84 0.47 1.51 1.99 3.90 0.06 2.12 1.47 2.91 5.98 2.24 4.74 3.27 2.66 3.79 0.89 2.15 1.43 4.04 5.37 4.39 2.37 2.25 2.99 3.43 0.42 5.16 3.70 3.03 6.22 2.67 2.32 2.07 2.42 5.57 1.93 5.20 1.84 6.72 3.72 3.05 3.90 3.24 7.20 2.09 3.64 1.85 1.81 5.22 3.89 4.97 1.85 5.52 7.32 1.53 5.56 3.45 1.44 3.25 5.17 5.96 6.04 3.02 3.18 3.50 5.93 5.71 5.61 2.11 2.52 3.09 4.04 0.58 7.18 3.11 2.98 6.09 5.58 3.07 4.31 3.43 5.53 3.71 2.01 2.59 1.58 3.15 3.29 3.66 3.06 3.66 0.45 4.47 0.54 4.96 1.21 2.50 September.... 0.74 6.43 3.53 3.76 4.39 3.74 2.02 1.99 1.18 2.25 4.34 0.91 1.36 2.29 1.88 0.65 2.43 2.55 4.32 1.20 6.51 5.17 2.72 3.19 6.89 3.40 7.36 3.59 November..... 3.62 1.06 1.61 2.83 0.75 3.25 6.08 0.83 4.93 0.87 5.97 1.48 5.26 1.80 December..... 3.44 0.22 4.44 0.63 2.62 0.48 2.75 2.58 2.47 1.11 2.67 1.99 1.59 4.21

August.

October

Totals.... 35.61 29.07 36.41 28.63 38.06 36.48 41.01 41.95 30.71 37.32 44.18 41.34 45.86 34.61

TABULATION OF MONTHLY PRECIPITATION, CHICAGO: 1871-1896-Continued.

MONTH.

1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896

Means.

January.. February. March April

May.

June

July.

August.

3.18 3.56 3.13 1.56 1.64 2.98, 1.99 1.99 2.08 1.55 2.15 1.12
2.01 1.51 5.10 1.51 1.31 2.42 1.95 1.57 2.44 2.13 1.60 3.48
0.57 1.79 0.89 2.99 1.43 2.10 2.13 2.21 1.69 2.66 1.32 1.26
4.00 1.29 0.46 2.13 2.35 3.28 3.14 2.17 4.16 2.65 0.86 2.79
3.17 1.00 1.38 6.22 5.38 5.13 2.09 6.77 1.93 3.35 1.99 4.16
5.20 0.94 1.63 1.66 2.93 3.25 2.42 10.58 3.59 1.96 1.79 2.82
2.44 1.53 1.05 3.93 9.56 2.57 2.47 2.23 3.08 0.60 2.42 3.61
11.28 3.38 3.35 2.10 0.39 2.58 4.52 1.85 0.18 0.60 6.49 3.52

2.11

2.31

2.40

3.22

3.72

3.80

3.49

2.98

.......

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2.97 6.93 4.03 0.98 2.75 1.39 0.32 1.34 1.98 8.28 0.89 6.70
3.87 1.42 2.03 2.95 1.82 4.20 0.36 1.54 1.75 0.84 0.51 1.36
2.33 1.66 2.41 2.89 3.49 1.59 2.83 2.68 2.45 1.18 5.60 2.16
3.35 1.76 3.67 1.94 1.90 1.25 1.32 1.63 2.14 1.66 6.76 0.16

2.98

2.93

2.82

2.34

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44.37 26.77 29.13 30.86 34.95 32.74 26.54 36.56 27.47 27.16 32.38 33.14

To avoid fine, this book should be returned on or before the date last stamped below.

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