. Annual report of the State Board of Health of the State of Rhode Island, for the year ending .. . 17 18 * 18 19 * 19 20 + $+ $ * 20 21 21 22 22 23 + * * 23 24 * 24 25 * 25 26 $ * 26 27 * * 27 28 28 29 29 30 * * 30 31 $ 31 Total rain and melted snow, Total depth of snow, inches, 55. + Too small to measure. t Snow. $ Snow and rain. FILTER FIELDS. Thi
. Annual report of the State Board of Health of the State of Rhode Island, for the year ending .. . 17 18 * 18 19 * 19 20 + $+ $ * 20 21 21 22 22 23 + * * 23 24 * 24 25 * 25 26 $ * 26 27 * * 27 28 28 29 29 30 * * 30 31 $ 31 Total rain and melted snow, Total depth of snow, inches, 55. + Too small to measure. t Snow. $ Snow and rain. FILTER FIELDS. This plant, located in the southern part of the city on the bank of theMoshassuck river, and utilized for the disposal of the sewage of theMoshassuck river district, has continued to do good work during theyear. In the latter part of November and the first of December the beds wereprepared for winter work by going over all the area carefully and remov-ing all dirty sand that had accumulated on the surface, and then furrowingall the beds excepting 12 and 13. About 446 cubic yards of poor sand were. 1898.] skckktakys be POET. 27 removed in this work, or an average of cubic yards per acre. 28,700lineal feel r ditch were cut in furrowing the beds. In .Inly rather more extensive work than usual was done. From bedsl.•_-:;- i-C-1•_ and 13 all the poor sand, amounting to 103 cubic yards, wasagain removed from the surface preparatory to leveling tip sludge beds1-2-U and 4, and adding to the area of the beds devoted to this work bymaking use of bed f> for the same purpose. As it was necessary to lower the level of bed 6 before it could be used asa sludge bed, the sand taken from this bed was used to raise the level ofbeds 1-2-3 and 4. About 265 cubic yards of good sand were taken from 0and spread over the other four beds. On account of the amount of sludge that was regularly turned on beds1-2-3 and 4, the level of the ground water in these beds remained very high,and it was dee
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