"A casual vacancy is deemed to have occurred:
a) when a local councillor fails to make his declaration of acceptance of office within the proper time; or
b)when his notice of resignation is received, or
c)on the day of his death..."
There are two kinds of libraries mentioned in the book. A high school library, that is simply an incidental setting, and the other is a first for this blog - a hospital library trolley. The Trolley is pushed through the wards by hospital volunteer Shirley Mollison, one of the many unlike-able characters in the story.