Again the British North America Act speaks of the legislative powers expressly conferred upon the Dominion parliament. And provincial legislatures as 'exclusive.' Does that mean merely exclusive' the one of the other; or was the Federation Act assuming to finally divest the Imperial parliament of any future power over the affairs of Canada? The Imperial parliament is a sovereign legislature, and never since Smiles v. Belford (p. 8) has its paramount authority over and within the Empire been questioned. Its actual exercise is another matter.