Conn. Gen. Stat. § 2-20: Certain charters granted only on petition.

No act of incorporation or alteration thereof shall be granted by the General Assembly, except upon a petition therefor, when the law requires that notice of such petition shall be given by advertisement. Each charter of any railroad company shall confine the road within the limits indicated by such notice, specify the towns through which it may pass, and otherwise designate the route on which the respective roads may be authorized to be made.