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40
Kew Area.
592 premises were inspected and infestations located at 17 (13
dwellings—1 Factory, 2 Builders' yards and a Railway Embank'
ment).
No infestation was of a major character and treatment to free
the premises was carried out immediately.
Petersham Area.
297 premises were inspected and infestations located at 27 (26
dwellings and 1 piggery).
The dwellings were minor infestations only but the piggery was
major in character. Treatment was commenced on the 27 premises
almost immediately following the survey and the rats cleared in a
reasonably short period.
Sewer Baiting.
October, 1948.
140 manholes in various sections of the Borough were subjected
to a two day prebaiting and third day poisoning (Zinc Phosphide)
treatment and of this number 94 gave a positive result.
November, 1948.
A test with unpoisoned bait (sausage rusk) was carried out on
1 in 10 of the foul sewer manholes in the Borough the object of this
test being to obtain information as to the needs for treatment of the
sewers in 1949.
The results show that it will be necessary to treat some 328
manholes on two occasions namely March and October, 1949.
Smoke Abatement.
Richmond being a residential district contains no very large
works or factories. The smaller factories give little trouble by smoke
nuisance.
Seven complaints of a minor character were received during the
year and all were overcome by inspection of the boiler plant, advice
to stokers and interviews with managers.
31 observations for excess smoke were made on various
chimneys from business premises throughout the area.