6. The Minister of Consumer Affairs, Cooperatives and Financial Institutions shall ascertain, before issuing the letters patent, that the subscribers to the memorandum of agreement have undertaken to subscribe an amount of $1,000,000 to the capital stock of the corporation and, subject to the provisions that follow, that they have actually paid $350,000 in trust for the account of the proposed corporation; the balance to be paid, on call, during the five years after the date of issue of the letters patent.