(h) Enter into partnership or into any arrangement for joint venture, sharing of profits, union of interest, reciprocal concessions, or co-operation with any person, firm, or corporation; to promote or join in promoting any company, syndicate, consortium, or partnership for the purpose of acquiring, developing, or otherwise turning to account any property which may be capable of being developed or turned to account so as directly or indirectly to benefit the members of the Association; to guarantee or otherwise assist any such person, firm, or corporation; to take, subscribe for, or otherwise acquire, any shares or securities in any such corporation and to sell, hold, or otherwise deal with the same; and to give or join in giving any mortgage, charge, or security over any property in which the Association is or may become interested by virtue of any such arrangement: