395
Health District IX.—Victoria.
Here again the Table and curves shew the tail end of the 1903 epidemic, finishing by the 36th week of the year while plague infected rats were found up to the 46th week,
From the 37th to 48th weeks of 1903 there was no human plague in the district and yet infected rats continued to be found in small numbers.
The two plague cases in the 49th week, 1903, appear three weeks after appar- ent cessation of rat plague.
Plague rats again shewed themselves in the 1st, 4th, 6th, 9th and 12th weeks, 1904, and an isolated plague case occurred in the 6 week.
Although in the 13th, 14th, 15th and 16th weeks of 1904 no infected rats were recorded the epidemic (1904) may be considered as having begun in the 14th week.
In the epizootic and epidemic periods for 1904 it is noticeable that the epide- mic both rises and falls before the epizootic.
Health District X.-Victoria.
This Table and curves are reinarkable as shewing a period of 36 weeks during which no plague cases were known although plague amongst rats was by no means absent after the 1903 epidemic had ended.
The 1904 epidemic period shews the human curve beginning before the rise of the corresponding rat curve.
And although the percentage of infected rats on the total caught was very much greater than in District IX or any other District yet the human curve never reaches the height which it does for District IX.