Such corporations in addition to the powers exercised by railroad corporations generally, may, with the consent of the authorities of any city or town in the State of Oklahoma located upon or along its lines, construct system of street railways upon such streets and upon such terms and conditions as may be agreed upon between such corporations and such city or town, and may also accept lighting contracts with such cities or towns, to supply the said cities or towns or the inhabitants thereof, with light or electric current for power. Such corporations may also acquire, by purchase or consolidation, plants, franchises, contracts, good will and other property of any existing street railway or lighting company.