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PRESIDENTIAL ADDRESS. 
Malegnant Growths in Rats and Mice: 
A Theory as to the nature of Cancerous Processes. 
Cancerous Growths in Rats and Mice. Malignant 
Growths in Other Animals. | 
Other Disease Conditions met with. 
The Ectoparasites of Rats and Mice: 
Fleas.—Fleas caught on Human Bengs. Bed Bugs. 
Pediculids. Acarina. 
The Protozoal Parasites of Rats and Mice: 
Trypanosoma lewrst. Heemosporidia. Sarcosporidia. 
Spirochetes. 
The Helminth Parasites of Rats and Mice: 
Nematodes: Trichinella spiralis. Gongylonema neo- 
plasticum. Hepaticola hepatica. Larval. Nema- 
todes in subserous nodules on the intestines. 
Rats as possible dispersers of the eggs of Human 
Ankylostomes. 
Acanthocephala—Cestodes—Trematodes. 
Previous Phenomenal Visitations of Rats or Mice in 
Australia : 
The 1869-70 ‘‘Gulf Country’’ Rat Visitation. The 
1887 Cooper’s Creek and Darling District Rat 
Visitations. The 1895 Visitation of the Rat Asco- 
pharynx cervinus at Charlotte Waters. The 1904 
Visitation of Rats at Alice Springs, S.A. The 
1903-5 Mouse Visitation. Mice in South Australia 
Talal 
The Mouse Plague of 1917: 
The Species of Mouse responsible. Summary of the 
Information available. Official Information. Per- 
sonal Information. Disease in the Visitation 
Mice. Disease in Men associated with the Mice. 
Birds and the Destruction of Mice. Means of 
combating the Plague of Mice. 
