Sessional_Paper_1911 — Page 217

147

No. 5 FILTER BED.

FIRST SERIES.

Last changed January 14th, 1911. Sand 2′ deep,

Rate of Filtration varied from 375 to 500 yards gallons per day. (See tables attached.)

Amounts of samples put up were:--

cc, cc, lcc on to Agar plates.

face, lec, Zec on to Lactose Agar plates.

lec, 2cc, 5cc on Glucose Bile Salt N. R. Peptone water.

lec, 2cc. 5cc, 10cc, 20cc, 50cc on to Lactose N. R. Peptone water.

Method of recording results as before.

Total No. of samples examined 15.

-

For unfiltered water taken on same day, see above.