RULE 9. Within the angle F, describe a square the sides of which shall be 12 inches, two of its sides lying upon the lines FG and FH, and within the angles G and H describe squares the side of which shall be 15 inches, the two outer sides of said square lying upon the lines FG and GI and FH and HI, and at the angle E describe a square whose side shall be 15 inches and so described that its sides shall be parallel with GI and IH and its centre immediately over the angular point E.
THE BATSMAN'S LINE.
RULE 10. On either side of the line AFB describe two parallelograms 6 feet long and 4 feet wide (marked 8 and 9), their length being parallel with the line AFB, their distance apart being 6 inches, added to each end of the length of the diagonal of the square within the angle F, and the centre of their length being upon said diagonal.
RULE 11. The Home Base at F and the Pitcher's Plate at 4 must be of whitened rubber and so fixed in the ground as to be even with the surface.
RULE 12. The First Base at G, the Second Base at E, and the Third Base at H, must be of white canvas bags, filled with soft material, and securely fastened in their positions described in Rule 9.
RULE 13. The lines described in Rules 3, 4, 5, 6, 7 and 10 must be marked with lime, chalk, or other suitable material, so as to be distinctly seen by the Umpire.
THE BALL.
RULE 14. The Ball.[A] [Footnote A: The Spalding League Ball has been adopted by the National League for the past sixteen years, and is used in all League contests.
For junior clubs (clubs composed of boys under 16 years of age) we recommend them to use the Spalding Boys' League Ball, and that games played by junior clubs with this ball will count as legal games the same as if played with the Official League Ball.]