er ;any private company of which the firm first-mentioned, or any such member, partner, relat-ive or other firm is the manag-ing agent, or secretaries and treasurers, or a director, or the manager ; and any body corporate at any gene-ral meeting of which not less than one-third of the total vot-ing power in regard to any matter may be exercised or controlled by any one or more of the following, na