periodicals of a more general or popular type is now easy by using the "cumulative indexes " and " readers' guides" that will be found in most colleges and public libraries. These articles are, of course, of very uneven quality and must be used discriminatingly. Most of the more important current articles on economic topics are listed, with many brief abstracts or appraisals, in the successive numbers of the American Economic Review.

Books in Special Fields. — The references given in connection with the different chapters in this volume are sufficient to enable one to make a fairly thorough study of the different subjects treated in these chapters. Many of the books referred to contain more elaborate bibliographies on their special subjects. The student should, of course, be familiar with the use of the card catalogue of a modern library. In using such a catalogue it should be remembered that the library classification of books by subjects is very rarely entirely satisfactory, so that one should exercise one's ingenuity in searching under different subjects. The Library of Congress has printed in pamphlet form lists of books and articles on various practical economic problems, and is often able to furnish, at a small price, shorter typewritten lists of references on other subjects. Short annotated bibliographies are issued by different state legislative libraries and municipal reference libraries. The bibliographies in the various economic encyclopedias, especially the Handwörterbuch der Staatswissenschaften, will often be found helpful. A very complete list of new books in various fields of economics is published quarterly in the American Economic Review.

Government Publications. The student should early acquire some familiarity with the use of government documents as first-hand sources of information. Aside from statutes and the proceedings of legislative bodies these publications include: (1) annual reports of different administrative departments and bureaus; (2) reports of special investigations made by the permanent bureaus or by special commissions; (3) records of the hearings before legislative committees of inquiry. A record of the enormous output of the publications of the federal government is contained in the Monthly Catalogue of Public Documents, published by the Superintendent of Documents, Washington. This has an annual index, and a comprehensive Document Catalogue is also published for each Congressional period. The Check List of Government Documents is convenient to use in locating regular or routine documents published before 1910. The Annotated Tables of and Consolidated Index to the Congressional Series of United States Public Documents may also be used for the same purpose. Poore's Descriptive Catalogue of the Government Publications of the United States, 1774-1881, is useful in locating irregular or obscure publications of various sorts. In nearly every congressional district there is a public or college library which is an official depository

for federal documents and has a nearly complete set of those published in recent years. Current documents may sometimes be obtained without charge from the departments or bureaus issuing them or from the Representative or Senator from one's district or state. They can always be purchased at small prices from the Superintendent of DocuThe Superintendent of Documents issues small printed price lists of the publications in different special fields.

ments.

The Library of Congress publishes a Monthly List of State Documents. Bowker's State Publications (three parts) give a fairly complete list up to about 1900, and a full index to the economic materials in state documents is being published by the Carnegie Institution. The volumes for a number of the larger states have already appeared. Municipal documents are often published in an unsystematic way, and there is no general index or list of either current or past municipal publications. The student should find it both practicable and instructive, however, to become acquainted with the published documents of the city in which he lives, or those of some large city in his state.

The British Parliamentary Papers contain a wealth of material on a wide range of economic topics. Much of this is listed in P. S. King & Son's Catalogue of Parliamentary Papers, 1801-1900 (with Supplement, 1901-1910). Lists of current publications are published by several London dealers. The more important ones are noted in the English economic journals, and (more fully) in an occasional "Blue Book Supplement" to the New Statesman, a London weekly. Among the government publications of other countries we can mention here only the valuable statistical year-books published by many nations and by a number of important cities. The student will find the statistical annuals of Australia and New Zealand especially interesting and instructive.

INDEX

Activity, desire for, as an economic | Benefit principle, in taxation, 698.

motive, 104.
Adams, H. C., on fiscal aspects of the Bills of credit, colonial and revolution.
tariff, 717.

Aldrich, N. W., plan for banking reform, Blodgett, J. H., on wages of farm labor,

Consumption, defined, 132; statistics of
144; harmful, 144.

Consumption goods, 110.

Contract, as an economic institution, 25;
in relation to distribution of wealth,
386.

on economic Contributory negligence, legal doctrine
of, 487.

Clayton Anti-trust Act, 241; in relation Copyrights, 23; as a source of monopoly,

Concentration in industry, 88. See Demand, nature of, 156; demand curve,