Large improvements need not only extensive borrowing powers, but the distribution of the burden over a long series of years. While twenty years has been heretofore deemed the limit of time which ought to be allowed for paying any debt incurred by the issue of bonds, it may be thought that the radical changes contemplated by the Plan of Chicago are of such unusual magnitude and of such permanent character that justice might demand distribution of the burden over more than one generation. Upon that view, bonds running for a longer period might be thought reasonable. The present constitutional limit of twenty years is, however, absolute, and an amendment to the constitution would be required to enable any municipality to issue bonds for a longer term. CONCLUSIONS From the foregoing examination of the legal aspects of the Plan of Chicago it appears First: That without any additional legislation many of the recommendations of the Plan can be adopted and practical steps be taken to carry them into effect; Second: That the legislature has ample power to grant either to the city or to other governmental agencies such additional authority as may be necessary to carry out all of the recommendations of the Plan as fully and as rapidly as may be found wise; and Third: That additional authority, and especially a substantial increase in the local bonding power, is essential to the effective accomplishment of the most important of these recommendations. It remains for the people of Chicago, through their legally constituted representatives, to decide upon the wisdom of the suggestions and to adopt them in the order of their relative importance and availability. The necessary funds can no doubt be secured as rapidly as it can be clearly shown that their expenditure will result in real advantage to the individual citizens who constitute “the public,” and upon whom rests, directly or indirectly, the burden of expense. In the last analysis it must be clear that a community which makes wise expenditure for public works not only imposes no real burden upon private property, but increases the value of all private property within its limits. Such a community should be given adequate authority to levy taxes and incur debt, subject always to such intelligent supervision of expenditures as will effectively guard against extravagance and waste. Certainly, any limitations upon a progressive municipality should be broad enough to make it possible to undertake such public enterprises as are recommended in this Plan.