(2)
16
South China are appreciated. The use of Carbon tetrachloride,
either alone or in combination with oil of chenopodium,
should, however, prove useful, if systematically applied and
repeated in certain areas at regular intervals, in producing
improvement in the population and possibly in diminishing
infection of the soil.
Page 11.
Leprosy.
transmission.
The Principal Civil Medical Officer
combats the theory that leprosy is a contagious disease, but
does not advance any fresh argument in support of his belief
that the disease arises from the consumption of imperfectly
cured or salt fish.
Page 13.
Malaria. The suggestion that the unusual prevalence of
malaria was in part due to the fact that "there were times
when the rainfall was insufficient to scour out the eggs and
larvae of mosquitos from the pools and other collections of
water" is perhaps correct. The difficulties of dealing with
such breeding places in rice-growing areas are very consider-
able, as is recognised on page 26 in noting the prevalence of
malaria among the police (see also page 18, and the Report of
1922 the Sanitary Department, bage 8.)
Page 19.
Lunatic Asylum. Table II (pages 21 and 22) shows the
admittance of twelve cases of insanity due to alcohol, but no
other drug such as opium, or cocaine, etc. appears to have
been an exciting cause.
Page 35.
Table of Notifiable Diseases. It will be observed that
Tuberculosis is not included among these diseases, but in view
of its considerable incidence (e.g. in Tung Wah Hospital
656 cases with a mortality of 50%, see page 28) it would
T
appear
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