10. Travel, intercourse, frequent meetings help amicable adjustments.
11. League should provide councils where men can meet and talk over differences.
12. Penalty for violating agreements should be automatic.
13. All should be obliged to make war on attacking nation.
President Lowell.
Using the Library. A reader must know how to use libraries. This means he must be able to find books by means of the card catalogs. These are arranged by both authors and subjects. If he knows the author of a book or its title he can easily find the cards and have the book handed to him. Very often he will seek information upon topics entirely new to him. In this case he must look under the entry of the topic for all the books bearing upon his. From the titles, the brief descriptions, and (sometimes) the tables of contents upon the cards he can select intelligently the books he needs. For instance, if he is searching for arguments to support a new kind of city government he could discard at once several books cataloged as follows, while he could pick unerringly the four which might furnish him the material he wants. These books are listed under the general topic "Cities."
The Spirit of Youth and the City Streets. Old English Towns. Municipal Administration. The Modern City and its Problems. Personality of American Cities. Historic Towns of the Southern States. Romantic Germany. Cities of Italy. American Municipal Progress.
Cross references are also valuable. In addition to books cataloged under the topic consulted, others grouped under other subjects may contain related information. Here are three actual cross references taken from a library catalog.
Land: Ownership, rights, and rent. See also conservation, production, agriculture.
Laboring classes: Morals and habits. See also ethics, amusements, Sunday.