-----------------
Month. | Scraping. | Raking.
+--------+--------+---------+--------+--------+----------
| Max. | Min. | Ave. | Max. | Min. | Ave.
-------------+--------+--------+---------+--------+--------+----------
1909.
-------------+--------+--------+---------+--------+--------+----------
July | 229.01 | 106.27 | 163.289 | 0 | 0 | 0
August | 175.54 | 124.94 | 152.581 | 0 | 0 | 0
September | 237.52 | 114.37 | 161.702 | 0 | 0 | 0
October | 206.09 | 78.78 | 132.359 | 96.50 | 71.51 | 82.708
November | 168.19 | 82.32 | 112.603 | 99.00 | 90.23 | 94.615
December | 135.77 | 128.33 | 132.647 | 144.35 | 106.11 | 125.940
-------------+--------+--------+---------+--------+--------+----------
1910.
-------------+--------+--------+---------+--------+--------+----------
January | 204.38 | 146.58 | 178.461 | 189.48 | 152.33 | 170.735
February | 205.73 | 205.73 | 205.730 | 192.98 | 118.85 | 158.890
March | 275.96 | 257.36 | 265.493 | 249.68 | 224.49 | 238.993
April | 295.96 | 104.13 | 181.972 | 307.57 | 45.22 | 142.448
May | 186.64 | 81.66 | 150.230 | 102.15 | 69.79 | 85.978
June | 213.70 | 130.85 | 171.059 | 181.25 | 167.84 | 174.540
-------------+--------+--------+---------+--------+--------+----------
Year 1909-10 | 295.96 | 81.66 | 159.151 | 307.57 | 45.22 | 143.832
-------------+--------+--------+---------+--------+--------+----------
Fiscal years:
-------------+--------+--------+---------+--------+--------+----------
1905-06 | 497.45 | 116.66 | 240.379 | 0 | 0 | 0
1906-07 | 466.12 | 69.76 | 220.693 | 103.28 | 32.13 | 76.870
1907-08 | 477.19 | 28.20 | 146.912 | 165.25 | 17.08 | 75.775
1908-09 | 298.08 | 39.26 | 125.617 | 244.19 | 41.41 | 88.439
=============+========+========+=========+========+========+===========

In re-sanding a filter, it is first filled with water to the
proposed depth of the sand layer. The outlet end of the hose is
connected to a 3-in. pipe which is supported on a boat, and the sand
is discharged through this pipe at the point required. Work is first
begun at the far end of the filter, and it is gradually filled by
swinging the boat from side to side and backing it by degrees to the
front end.

At