It would not do to confine it to the permanent officials. The main point of this is to meet cases of pressing emergencies. Take for instance the work on the Welland canal. We do not keep a permanent electrician there and consequently
we require to employ, from time to time, expert electricians to meet emergencies. If you were to limit us to the employment of permanent officials you would make it impossible for the department to secure the services of an expert who in cases where there was no permanent official, could be employed.