610 ILCS 5/15
In case the capital stock of any such corporation shall be found insufficient for constructing and operating its road, such corporation may, with the concurrence of two-thirds in value of all its stock, increase its capital stock, from time to time, to any amount required for the purpose aforesaid. Such increase shall be sanctioned by a vote, in person or by proxy, of two-thirds in amount of all the stock of such corporation, at a meeting of such stockholders called by the directors of the corporation for such purpose, by giving notice in writing to each stockholder, to be served personally or by depositing the same in a post office, directed to the post office address of each of said stockholders severally, with necessary postage for the transmittal of the same, prepaid, at least sixty days prior to the day appointed for such meeting, and by advertising the same in some newspaper published in each county through or into which the said road shall run or be intended to run (if any newspaper shall be published therein), at least sixty days prior to the day appointed for such meeting. Such notice shall state the time and place of the meeting, the object thereof, and the amount to which it is proposed to increase such capital stock; and at such meeting the corporate stock of such corporation may be so increased, by a vote of two-thirds in amount of the corporate stock of such corporation, to an amount not exceeding the amount mentioned in the notices so given. Should the directors of any corporation desire at any time to call a special meeting of the stockholders, for any other necessary purpose, the same may be done in the manner in this section provided, and if such meeting be attended by the owners of two-thirds in amount of the stock, in person or by proxy, any other necessary business of such corporation may be then transacted, except the altering, amending or adding to the by-laws of such corporation: Provided, such business shall have been specified in the notices given. And the proceedings of any such meeting shall be entered on the journal of the proceedings of such corporation. Every order or resolution increasing the capital stock of any such corporation shall be duly recorded as required in Section 2 of this act.
610 ILCS 5/15