I  /l 
I  ■' 
I  I 
I 
506 
Dr.  Watson,  the  Medical  Officer,  makes  an  important  remark 
regarding  the  reduction  of  mosquitoes  .•  — ‘  A  definite  improvement  in 
the  health  of  Klang  was  evident  when  only  the  swamps  nearest  to  the 
main  groups  of  houses  had  been  dealt  with,  and  while  other  swamps 
within  the  town  were  still  untouched.  The  mosquitoes  from  these 
did  not  appear  to  travel  any  distance,  and  there  has  been  no  evidence 
of  dangerous  immigration  of  Anophelines  from  the  extensive  breeding 
places  which,  until  the  middle  of  1904,  existed  just  outside  the  town 
boundary,  and  some  of  which  still  remain.  Yet  the  species  breeding 
in  those  swamps  were  identical  with  those  breeding  in  the  town.’ 
3.  Hong  Kong 
In  Hong  Kong  an  anti-malarial  campaign,  drainage,  wire  gauze, 
oiling  the  pools  and  quinine  prophylaxis,  was  started  by  Dr. 
Thompson  in  1901,  and  here  it  must  be  remembered  that  owing  to 
the  constant  daily  migration  of  3,000  to  6,000  natives  from  the 
country  districts,  the  difficulties  of  stamping  out  malaria  are  much 
greater,  as  many  of  these  must  remain  infected  in  spite  of  local 
measures.  But  in  spite  of  this  the  malaria  reduction  is  very  striking. 
Malaria  statistics  in  two  large  hospitals. 
Anti-malarial  measures 
1896 
1897 
1898 
1899 
1900 
1901 
1902 
1903 
1904 
1905 
Admissions  . 
1,021 
865 
0 
00 
1,220 
1,294 
752 
568 
433 
419 
Deaths  . . 
_ 
197 
126 
63 
163 
132 
128 
63 
58 
54 
Admission  rate  of  Police  for  Malaria. 
Admissions  per  cent. 
32 
25 
19 
31 
42 
44 
19 
18 
II 
12 
Deaths  from  Malaria. 
Population  . 
239)419 
377)85° 
Total  deaths . 
533 
-1^ 
530 
546 
555 
574 
425 
300 
285 
Deaths  in  city 
(Chinese  only) 
290 
302 
280 
218 
242 
281 
189 
152 
90 
87 
