work of the Association in this respect is en- tirely advisory. It seeks to discover all diffi- culties, to search for solutions, and to recom- mend general types of action to the Rules Com- mittee. That these deliberations are thorough, unselfish and sound is demonstrated by the action of the Rules Committee in adopting practically every suggestion which has had support of the vast majority of the Associa- tion’s members. A partial list of rules changes or adaptations which have been initiated in this Association and which are now in the rule book include: 1. Divisien of the court by the center line and incorporation of the ten second provisions; 2. The three second restrictions in the offensive freethrow circle; 8. Installation of the center jump restrain- ing circle; 4, Modification of the center jump regula- tions; 5. Increase of intérmission between halves to fifteen minutes; 6. Standardization of interpretations in blocking, screening and face guarding; - 7. Optional extension of the end line to a distance four feet behind the backstop. As important as have been these efforts to improve the rules they have not been the only concern of the Association. The Research Committee has conducted many scientific ex- periments with game conditions and materials which have resulted in their improvement, and 14