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52
Mosquitoes. Investigations were again carried out in
the areas that were originally badly infested with mosquitoes.
These were mainly in the Plumstead and Abbey Wood district,
and it was found that there was a further diminution
from the previous year, which no doubt can, in a very large
measure, be associated with the efforts of the Council in
improving the ditches on the marsh land.
Rag Flock. This Act prohibits the use of dirty flock, and
the Regulations made thereunder provide for a standard of
cleanliness. Six samples were taken during the year, the
detailed results of which are given as follows:—
Parts per
No. 100,000
1. Soluble chlorine in the form of chlorides 30 00
2. do. do. 22.50
3. do. do. 60.00
4. do. do. 32.50
5. do. do. 181.00
6. do. do. 23.50
Samples No. 3, 4, and 5 did not comply with the Rag
Flock Regulations, viz., that the amount of soluble chlorine
in the form of chlorides must not exceed 30 parts of chlorine
in 100,000 parts of flock. Cautionary letters were sent by the
Town Clerk to those concerned.
Offensive Trades. There are no offensive trades in the
Borough.
Action taken with regard to Smoke Abatement. The
Sanitary Inspectors, in the ordinary course of their duties,
keep ehimney shafts under observation and record any
nuisance of smoke in connection therewith. During the year
there were 20 special observations.
Factory and Workshop Act. The Medical Officer of
Health is required to include in his Annual Report the details
of the administration of this Act in this district. The total
number of factories, workshops, and work places on the
register at the end of the year was 256. The number of
inspections made was 877, which compares with 761 in 1925.