S.112(6) of the Act as it read effective prior to July 1, 1950 provided that the liability of a taxpayer for amounts withheld by him "constituted a first charge on his assets", and s. 112(6) after that date provided that such amounts were a first charge "on his property". After finding that the Department had priority over a bank because the bank's floating charge had not become crystallized at the time the above statutory lien attached, Judson J. stated (p. 1028):