_Second._ The creation of a system of highways outside the city. _Third._ The improvement of railway terminals, and the development of a complete traction system for both freight and passengers. _Fourth._ The acquisition of an outer park system, and of parkway circuits. _Fifth._ The systematic arrangement of the streets and avenues within the city, in order to facilitate the movement to and from the business district. _Sixth._ The development of centers of intellectual life and of civic administration, so related as to give coherence and unity to the city. The improvement of the Lake front from Winnetka to the Indiana line is an economic necessity. As has been stated, the aggregate of the waste material seeking dumping ground on the Lake shore because that is the cheapest place to deposit it, is not less than one million cubic yards per annum. This material is sufficient to produce annually from twenty-seven to thirty acres of land if used to build the Lake parkways and park strips herein recommended. The park authorities would only have to furnish breakwaters and bridges and to finish the grounds. The utilization of this material in thirty years would produce all the Lake front land recommended in the report for the region between Grant and Jackson parks. But long before the expiration of the thirty years the amount of filling urgently seeking the Lake front dump will be enormously increased. This dirt should be utilized for the public benefit, instead of being wasted as at present in the open Lake, where it becomes detrimental to health and an interference to navigation. The dirt to be disposed of in building new traction tunnels under the principal streets of the city will go far toward the completion of the new Lake shore parks. It is evident, therefore, that this improvement, involving the redemption of the entire Lake front from Winnetka to the Indiana state line, and the creation of an extremely beautiful and useful public recreation ground, will involve very little public expense. There can be no doubt that this part of the plan of Chicago will be carried through; and in fact much is already being accomplished along these lines.