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8
The bacteriological examination of the above waters shows the
absence of the Bacillus Coli and the Bacillus Enteritidis. A
special search was also made for the Bacillus Typhosus, but in
neither sample was its presence detected.
The number of organisms in the sample No.1 is very excessive,
otherwise both samples are of a satisfactory character.
PUBLIC HEALTH LABORATORIES.
" Report on the Bacteriological Examination of a sample
of water received on September 11, 1908, from Barking
Urban District Council. Source i., from main at 24, King
Edwards Road, 2.30 p.m., September 11. ii., from Main at
69, Morley Road, 2 p.m., September 11.
Number of organisms per cubic centimetre capable of
growing on alkaline nutrient jelly at 20°C. in 4 days. Counted
by aid of pocket lens; No. i., 16,000 in 3 days, liquified
4th day; No. ii., 510
Smallest quantity of water in which growth occurred,
with production of acid and gas in bile-salt glucose broth.
(1, 5, 10, or 20cc); No. i., acid in 1 cc, gas in 1 cc; No. ii.,
Acid in 5 cc, gas in 5 cc.
Nature of organisms found in this growth : No Bacillus
Coli, or Bacillus Typhosus found in either sample.
Reaction of the bacillus enteritidis sporogones; No. i., in
250 cc., negative; No. ii., in 250 cc., negative.