PRESIDENTIAL ADDRESS. 65 
occurred at Newcastle on August 6th, 1902. During the 
outbreak a number of animals died in the Zoological Gar- 
dens, Moore Park, and amongst these plague was detected in 
four wallabies (Macropus sp.), one wallaroo (M. robustus 
Gould), one pademelon (M. thetidis Lesson), one tree kan- 
garoo, an Indian antelope (Antilope cennacapra L.) and 
three guinea-pigs (Cavia cutlerr Bennett). Infected rats, 
all H. norvegicus, were found on the s.s. ‘‘Antillian,’’ from 
Capetown. Dr. Tidswell did not find plague in any speci- 
mens of EF. rattus, though these were readily infected in the 
laboratory. 
1903.—Two human cases occurred, one on June 17th, the 
other on July 2nd—both recovered. Plague rats were found 
between May 12th and August 15th. Plague rats were 
found between July 29th and August 3rd on the barque 
‘* Alterschwan,’’ from Buenos Ayres, ete. 
1904.—Twelve human eases, of which six died, occurred 
between March 9th and September 10th. Between March 
Ist and December 3rd, 108 E. norvegicus, 73 EF. rattus, 62 
M. musculus and 1 cat were found plague infected. 
1905.—In this year plague occurred not only in Sydney, 
' but also on the North Coast. In the former locality there 
were 18 cases, five fatal, between March 11th and July 12th. 
Plague rats were found between January 18th and Decem- 
ber 5th. Altogether 78 H. norvegicus, 45 EH. rattus and 18 
M. musculus were found infected. The outbreak began on 
the North Coast wharf with infected H. rattus and later E. 
NOrVegicus. 
In the Ulmarra district of the North Coast there were 
13 cases of human plague, eight fatal, between December 
14th, 1904, and May 6th, 1905. 101 infected HE. norvegicus 
and 2 infected mice were found at Ulmarra, and five of 
the same species of rat and 1 mouse infected at Woodford 
Island; 2 cats also had plague. At Ballina, on the Rich- 
E—May 1, 1918, ; 
