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It has been remarked in previous reports of the Board that the influences of the meteorological conditions of the atmosphere, as well as the floating matter suspended therein, as causes of disease, are recognized and acknowledged by all pathologists; and the following tables are therefore introduced, as heretofore, for the purpose of comparing the large prevalence of certain diseases at different periods of the year, with the temperature, the barometric pressure, the relative humidity, prevailing direction of the wind and other conditions of the atmosphere, and also the amount of rainfall during each month of the year. All of the said diseases may be found in the report upon the registration of deaths by MONTHS, in Table VII of the Registration Report.

The first table is compiled from the monthly reports of the City Engineer of Providence, and shows the mean, maximum and minimum temperature of the different months, and the extremes and average daily ranges of the same, the rainfall and prevailing direction of the wind.

The second table will give a more comprehensive monthly sum- . mary of observations during 1889, including a larger number of atmospheric conditions for each month, and also yearly summaries for each of the eight preceding years.

It is condensed from the annual summary of monthly observations at Hope Reservoir and the City Hall.

The meteorological observations taken on Block Island are furnished by the courtesy of the officers of the Signal Office, War Department, Washington, D. C.

TABLE I.

Temperature, Rainfall and Prevailing Direction of the Wind, for each Month

during the year 1889.

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Mean temperature for the year 1889 was 51.4 Fab. and melted snow, 55.91 inches.

Total amount of rain

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TABLE II.
Compiled from the Summary of Meteorological Observations, at Hope Reservoir and City Hall, for the Year 1889.

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January ....

29.97 30.60 29.05 1.55
February ....

30.05 30.80 29,26 1.54
March.....

29.83 30.46 28.93 1.53
April.....

29.95 30.43 29 31 1.12
May.......... 29.94 30,33 29.52 .81

30.01 30.45 29.48 .97
July..

29.97 30.30 29.62
August..

30.05 30.36 29.72 .64
September......... 30.03 30.34 29.38 .96
October..... 29.99 30.11 29.54 .87
November........., 30.02 30.59 29.25 1.34
December.......... 30.08 30.90 29.13 1.77
Means for the year.. 20.99 ............ 1.15
Totals for the year.. .....

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Extremer................ 30.90 28.93 1.97 ...... 02.5

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Means for the year. 30.01

1.13 48.8 ............ 46.8 Totals for the year. ...... Extremes................ 30.80 28.69 2.11 ...... 95.5 -5.5 101.

.................. .. 51 27 12 7 56 30 39 69 74 .... 34 143

5.0.... ... 52.02

18 160

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54.50

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Yearly Summary for 1885.

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Means for the year. 29.98 ..

1.09 48.7 Totals for the year. ...... Extremes................ 30.82 28.99 1.83 ...... 93.6

71 ........ ....

....... 46 21 8 14 56 43 42 74 61 .... 45 157 | 17 1424
......

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Means for the year. 30.01 ..

1.05 49.5 ...

49.2 Totals for the year. ...... Extremes.....

30.97 28.93 1.86 ...... 94. 1-10. 104.

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TABLE II.–CONTINUED.

Summary of Meteorological Observations at Hope Reservoir and City Hall, for the years 1881-1883

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.... 5.3

Yearly Summary for 1882.
Means for the year. 30.03............ 1.03 19.2 ............ 46. 72 ........

..... 2.2 ....
Totals for the year.

. 54 26 2 16 46 39 40 82 60.... 44 148 31 136 6 ... 51.84 74.00
Extremes............... 30.79 29.22 1.57 ...... 95. -11. 106. ...

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Yearly Summary for 1881. Means for the year. 30.00 ... 1.08 49.6 ......

5.1 ........ Totals for the year.

.............

.. 47 33 12 9 50 47 20 80 67 .... 80 | 73 54 130 .... 52.98 27.50 Extremes ................ 30.80 28.97 1.83 ...... 96. 4. 100.

.......

********************* The mean velocity and mean force of the wind and amount of cloud are expressed approximately in figures from 0 10 10. Multiplying the mean force by four will give approximately the mean velocity, per hour, in miles.

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