Terminal stations 70 The traction systems 73 Comfort an object in passenger transportation 74 A perfect passenger and freight handling machine 76 The handling of the mails 76 The suburban station 78 The necessity for, and advantages of, harmonious action among the Chicago railroads 78 CHAPTER VI STREETS WITHIN THE CITY The dominant natural features of Chicago 79 The need of new and enlarged channels of circulation 80 Causes of the growth of cities 81 Cleanliness the first consideration for city streets 82 Residence streets 83 The Avenue, or traffic street 84 The Boulevard 84 Street architecture 86 Traffic interruptions 88 The elliptical avenue 90 The planning of new subdivisions 91 The necessity for diagonal streets 93 Proposed new circuits 95 Improvement of the Chicago River 97 CHAPTER VII THE HEART OF CHICAGO Opportunity for creating a unified and convenient city 99 The problem of overcoming congestion in the business center 100 Solution of the problem simple and natural 100 Michigan Avenue: its importance in the city plan 100 The proposed improvement of Michigan Avenue 100 An elevated roadway 102 Bridges over the river 104 Improvement of Halsted Street 105 Slums of Chicago 106 The slum represents the failure of the city to protect its people 106 The Financial Quarter 107 Grant Park as a spacious and attractive public garden 108 Location of the Field Museum, the Crerar Library and the Art Institute 108 A Center of Letters 108