PRESIDENTIAL ADDRESS. ‘a 
1901.—Between March 2nd and May 18th there were 23 
cases, with 5 deaths. Of these 15 cases and 5 deaths were 
at Perth, 7 cases at Fremantle, and 1 case at Kalgoorlie. 
1902.—There were 38 cases at Fremantle between May 
22nd and July 8th, all of whom died. The Vital Statistics 
record 4 deaths. 
1903.—138 cases, 8 fatal, at Fremantle between January 
25th and November 6th. 
1904.4 cases, 1 fatal, between June 25th and August 
25th. Of these, 2 cases and 1 death were at Perth, 2 cases 
at Fremantle. 
1905.—There were no local cases. The Vital Statistics 
record 2 deaths. ° 
1906.—381 cases, 14 fatal. Of these there were four cases 
in Perth between January 12th and May 14th, 17 at Fre- 
mantle, with 6 deaths, between February 12th and June 
2nd, and 10, with 8 deaths, at Geraldton, between Febru- 
ary 19th and March 8th. 
1909.—A non-indigenous fatal case occurred. 
Of the local cases, 6 occurred in January, 22 in February, 
24 in March, 2 in April, 7 in May, 5 in June, 2 in July, 1 
in August, 1 in September, 1 in October, 2 in November, 
and none in December. 
THE SPECIES OF ANIMALS NATURALLY INFECTED WITH 
PLAGUE IN AUSTRALIA. 
In the earlier years of plague, differentiation 
between infected E. norvegicus and KE. rattus was not 
carried out. From 1904, however, some information is 
available for New South Wales, Queensland and South Aus- 
tralia. 
E. norvegicus.—In New South Wales, from 1900 to 1902, 
all the infected rats were considered to be E. norvegicus. 
