ot De
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TABLE XIV.
Days
in use
Gallons
yard day
MONTH
YEAR 1910.
Pokfulum Reservoir Water Filtered at
West Point FILTER BEDS
Average Rate of Filtration per month in gallons per square yard of Filter Bed
BED NO. 1.
Days
in use
Gallons
yard day
BED No. 2.
per day.
BED No. 3.
BED NO. 4.
BED No. 5.
Days
Gallons
Days
Gallons
Days
Gallons
Days
10 use
yard day in use
yard day
in use yard day
in use
BED No. 6.
Gallons
yard day
January
February
22
549
20
630
18
630
28
382
19
612
655
March
22
655
27
516
4
352
31
735
April
333333
634
1
652
21
572
10
418
7
455
May
12
June
22
22
533
N
376
—
7
369
23
552
26
654
670
24
717
21
643
23
694
20
515
21
680
July
25
679
......
August
28
631
September...
26
774
October
30
713
November
1
∞ NO NO NO 2
19
768
29
769
27
769
22
20
692
30
501
21
N & Na a
22
723
27
675
25
876
29
723
26
835
29
651
25
743
23
805
859
27
545
27
766
27
893
29
742
26
782
21
527
16
531
30
2228
646
24
849
525
26
503
December
4
503
19
503
27
503
12
503
31
503