Arrangements for Facilities, 2; Fees, 2; The Instructor, 3; Size of Classes, 3; Season, 3; Length of Period, 3; Poli cies, 3; Selection of Ball, 3; Alley Assignment, 5; Alterna tion of Alleys, 5; Safety, 5; Skill Classification, 6; Clothing and Equipment, 6; Grading, 7.