Section 7. Proprietors of shares to be members of Association.

1 * * * Every proprietor of a share of the said Capital Stock, who shall cease to be a proprietor of such Stock, shall cease to be a member of the corporation created by this Act; and 2* * * every person who shall become a proprietor of the said Capital Stock, shall become a member of the corporation created by this Act; and shall, in respect of his share or shares of the said Capital Stock, be under the same liabilities under which an original proprietor of the said Capital Stock would be.