(1)  The rules in bankruptcy relating to contracts of sale shall continue to apply thereto notwithstanding anything in this Act contained.

(2)  The rules of the common law, including the law merchant, save in so far as they are inconsistent with the express provisions of this Act, and in particular the rules relating to the law of principal and agent and the effect of fraud, misrepresentation, duress, or coercion, mistake, or other invalidating cause shall continue to apply to contracts for the sale of goods.

(3)  Nothing in this Act, or in any repeal effected thereby, shall affect the enactments relating to bills of sale, or any enactment relating to the sale of goods which is not expressly repealed by this Act.

(4)  The provisions of this Act relating to contracts of sale do not apply to any transaction in the form of a contract of sale which is intended to operate by way of mortgage, pledge, charge, or other security.