act of the legislature or some question of public policy. In Illinois there has been enacted what is known as the "public opinion law," which provides that upon petition by 10 per cent of the registered voters of the state the legislature is required to submit to the voters any question of public policy for their opinion. The popular vote, however, is nothing more than an expression of opinion by the voters and is not binding upon the legislature. _The Oregon System._--The idea of the initiative and the referendum has been carried out most fully in Oregon, whose constitution provides that 8 per cent of the voters may by petition propose an amendment to the constitution, and when so proposed it must be submitted to the voters and if approved by a majority of them the amendment becomes a part of the constitution. Likewise the constitution of Oregon provides for the initiation and adoption of ordinary laws by the people. It further provides that upon the petition of 5 per cent of the voters any act of the legislature, with certain exceptions, before going into effect, must be submitted to the people for their approval, and if not approved by a majority of those voting, it shall not go into effect. From 1904 to 1914, 130 constitutional amendments and statutes were submitted to popular vote, of which 46 were adopted. For the information of the voters, "publicity pamphlets" are provided, containing an explanation of the measures upon which they are called to vote, together with arguments for and against each proposition. In 1912 these arguments (on 37 measures) made a book of 252 pages. _Initiative and Referendum in other States._--Various other states (South Dakota, Utah, Colorado, Montana, Idaho, Missouri, Maine, Arkansas, Oklahoma, Nebraska, Arizona, Nevada, California, Washington, Michigan, Ohio, North Dakota, Massachusetts, and Mississippi) have established both the initiative and the referendum in some form or other. The initiative and referendum are in use also in many cities, especially those under the commission plan of government. Usually the number who are empowered to initiate a proposed law or ordinance is 8 or 10 per cent of the registered vote. In Texas the referendum is applied to the formulation by political parties of their party policies, 10 per cent of the voters being allowed to propose policies which must be submitted to the party for their opinion.