c. The encumbering of sidewalks and streets. d. The restriction of certain streets. e. Remedies for the congestion of traffic, as tunnels, belt lines, etc., for freight. f. The growth of business limited by traffic. 4. Sidewalks. a. Regulations as to laying, repairing. b. Who has jurisdiction over them. c. The stoop line. d. Right of the citizen to demand good sidewalks. e. Blocking the sidewalk. 5. Gutters. a. Whose business to keep clear of ice, snow or dirt. b. Whose business to enforce the law and who makes the law? 6. The sewer system. a. How and by whom sewers are put in. b. Who pays for them. c. Who has charge of them. d. How connected with the houses. e. How the sewage is disposed of. f. What is done in other cities and what should be done here? g. The importance of a good sewer system to the health of the community. 7. The water supply. a. Why the city and not the individual furnishes the supply of water in a great city. b. Why the water supply conditions the growth of the city. c. Where we obtain our present water supply and how it reaches us. d. Who has charge of the water supply. e. The total and per capita supply of water in the city. f. How water is paid for. g. The danger of a water famine. 1. How it can be averted. (a) Saving the water by the repairing of leaks, using meters, etc., salt water for fires and cleaning streets. (b) New sources of supply. The difficulties. h. The advantages of city ownership over private company. i. Cost of water supply. 8. Lighting the streets. a. How it is done. b. What it costs. c. Who has charge of it. d. Should it be done by the city or a private company? e. The use of the streets for carrying pipes and wires. f. Who controls this use? g. The control over these companies by the city or state. h. Ought the city furnish light to citizens for their private purposes? i. How the furnishing of light and fuel differs from furnishing meat and groceries. j. Who gives the right to place telegraph and telephone wires? k. Why should they be underground? (a) Appearance, (b) Light, (c) Fire. 9. Transportation by cars on the streets. a. The giving of franchises, why? b. What is paid for a franchise? c. Who has jurisdiction over street railways and to what extent? d. Should the city own them? e. Importance of street passenger transportation in the life of the city. f. What cheaper fares could do for the city. 10. The rights of citizens on the streets.