shall always be familiar with the duties of the place. The school
committee must visit all the public schools at least once a month, and
make a report to the town every year. It is for them to decide what
text-books are to be used. They examine candidates for the position
of teacher and issue certificates to those whom they select. The
certificate is issued in duplicate, and one copy is handed to the
selectmen as a warrant that the teacher is entitled to receive a
salary. Teachers are appointed for a term of one year, but where their
work is satisfactory the appointments are usually renewed year after
year. A recent act in Massachusetts _permits_ the appointment of
teachers to serve during good behaviour, but few boards have as yet
availed themselves of this law. If the amount of work to be done seems
to require it, the committee appoints a superintendent of schools. He
is a sort of lieutenant of the school committee, and under its general
direction carries on the detailed work of supervision.

Other town officers are the surveyors of highways, who are responsible
for keeping the roads and bridges in repair; field-drivers and
pound-keepers; fence-viewers; surveyors of lumber, measurers of wood,
and sealers of weights and measures.

[Sidenote: Field-drivers and pound keepers.]
The field-driver takes stray animals to the pound, and then notifies
their owner; or if he does not know who is the owner he posts a
description of the animals in some such place as the village store
or tavern, or has it published in the nearest country newspaper.
Meanwhile the strays are duly fed by the pound-keeper, who does not
let them out of his custody until all expenses have been paid.

[Sidenote: Fence-viewers.]