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Ira December an annual test baiting of the Corporation's aeworc was carried ov';, the results being as follows:-
Area
No.manhole s
test baited
No.of manholes
showing partial
take of test bait
No.of manholes
showing complete
take of test bait.
No of manholes
showing no takeof
test bait.
1
13
–
–
13
2
18
1
2
15
3
17
–
–
17
4
37
–
–
37
5
15
–
–
15
6
44
–
4
40
7
8
–
–
8
8
39
–
1
38
9
38
–
–
33
229
1
7
221
The position in regard 3 to sewers nay be considered most satisfactory, because since they were
originally treated in April, 1948, there has been, more or loss a steady decrease of "takes" of poison
bait. Although the first Maintenance Treatment showed 18 "takes" of poison bait against 8 for the
second Initial Treatment: the fieruro for the second Maintenance Treatment wan down tn 7.
The position
may be summarised as follows:-
Date
Description
No.manholes prebaited
Takes of prebait
Take of poison bait.
April 1948
1st Initial Treatment
218
77
31
July 1948
2nd " "
77
14
8
Feb. 1949
1st Maintenance "
80
49
18
July 1949
2 nd '' ''
71
20
7