The directors of such corporation shall give notice of such meeting by causing written or printed notices thereof to be either personally served upon or duly mailed (postage prepaid) to such stockholders whose names and address shall be known to said directors, such notice to be so mailed at least sixty days before the time fixed for such meetings. The said notices shall state the time and place of such meeting and the purpose thereof, as well as the amount of the proposed indebtedness. The said directors shall also cause like notices to be inserted in some newspaper published in each county through which said road shall run, (if any newspaper shall be published therein) at least sixty days prior to the day appointed for such meeting.