54. Every general meeting shall be called by Twenty-one days' notice in writing at the least. The notice shall be exclusive of the day on which it is served or deemed to be served and of the day for which it is given, and shall specify the place, the day and the hour of meeting and, in case of special business, the general nature of that business, and shall be given, in the manner hereinafter mentioned or in such other manner, if any, as may be prescribed by the Company in general meeting, to such persons as are, under the regulations of the Company, entitled to receive such notices from the Company.