CUSTOM OF THE CONSTITUTION. 43 
office of Governor-General and the Instructions issued to the 
Governor-General were revised in 1878. By these instru- 
ments he is authorized to exercise several important execu- 
tive and prerogative powers vested in Her Majesty, as for 
instance the summoning, proroguing and dissolving parlia- 
ment, the pardoning of criminals and the appointment of 
judges, ministers and other officers. 
It is not usual on the appointment of the Lieutenant- 
Governor of a province to issue instructions to him, but such 
a course has been occasionally adopted. 
. See Appendix.