to
about 14,000,000 gal., which was maintained until the filter was put
out of service on February 28th, 1910.

This experimental plant was in service from September, 1908, to the
latter part of February, 1910, or for about 1-1/2 years, and the
leading results are summarized in Table 20.

~Table 17--Record of Experimental Filter Plant No. 1.~

Columns:
A - Rate, millions of gallons per acre daily.
B - Loss of head.
C - Rate, millions of gallons per acre daily.
D - Loss of head.
E - Applied water.
F - Effluent preliminary filter.
G - Effluent final filter.
H - Applied water.
I - Effluent preliminary filter.
J - Effluent final filter.

=======+===========+===========+=================+====================
|Preliminary| Final | Turbidity. | Bacteria.
| Filter. | Filter. | |
Date. |-----+-----+-----+-----+-----+-----+-----+------+------+------
| A | B | C | D | E | F | G | H | I | J
-------+-----+-----+-----+-----+-----+-----+-----+------+------+------
1907.
-------+-----+-----+-----+-----+-----+-----+-----+------+------+------
Feb. 8|19.40| 0.71| 3.10| 0.17 | ...| ... | ... | 1,100| 2,000|2,500
Feb. 9|21.50| 0.81| 3.11| 0.16 | ...| ... | ... | 200| 950| 500
Feb. 10|20.60| 0.95| 3.04| 0.14 | ...| ... | ... | ... | ... | ...
Feb. 11|20.10| 1.08| 3.03| 0.12 | 12 | 3 | 2 | 600| 900|1,300
Feb. 12|19.80| 1.23| 3.02| 0.13 | 14 | 4 | 2 | 650| 650| 650
Feb. 13|19.50| 1.38| 2.96| 0.12 | 15 | 6 | 2 | 600| 600| 950
Feb. 14|21.20| 1.67| 3.21| 0.11 | 15 | 4 | 2 | 650| 700| 800
Feb. 15|25.40| 2.03| 3.90| 0.13 | 12 | 4 | 2 | 600| 550| 800
Feb. 16|25.00| 2.23| 3.89| 0.12 | 14 | 3 | 2 | 850| 550| 500
Feb. 17| Shut down for changes in size of meter and piping. |
Feb. 18| ... | ... | ... | ... | ...| ... | ... | 1,200| ... | 650
Feb. 21|38.60| 1.59| 3.93| 0.18 | 20 | 4 | 2 | 1,800| 1,100| 700
Feb. 22|38.00| 1.84| 3.92| 0.15 | 15 | 3 | 2 | Holiday.
Feb. 23|42.10| 2.36| 3.95| 0.14 | 20 | 5 | 2 | 1,600| 600| 220
Feb. 24|47.90| 3.04| 3.93| 0.13 | 20 | 6 | 3 | Sunday.
Feb. 25| Shut down change meter | 1,400| 800| 450
| from outlet to inlet. | | |
Feb. 27| ... | 2.24| .