This free pattern originally published in:
Royal Society #1-3, Crochet Lessons 
MATERIALS REQUIRED.—1 ball Royal Society Crochet Cotton, White, size 5.
INSERTION
MATERIALS REQUIRED.—1 ball Royal Society Crochet Cotton, White, size 5.
INSERTION
MATERIALS REQUIRED—1 ball Royal Society Crochet Cotton, White, size 5.
MATERIALS REQUIRED—1 ball Royal Society Crochet Cotton, color 1030, Blue, size 5.
MATERIALS REQUIRED.—2 balls Royal Society Crochet Cotton, White, size 3. Bone crochet hook.
MATERIALS REQUIRED.— For mat measuring 13 inches, 2 balls Royal Society Crochet Cotton, White, size 3, and 1 ball Royal Society Crochet Cotton, color 1
MATERIALS REQUIRED.— 2 balls Royal Society Crochet Cotton, size 5, any color, for principal color, and 1 ball Royal Society Crochet Cotton, size 5, any
MATERIALS REQUIRED.—3 balls Royal Society Crochet Cotton, color 1010, Ecru, size 3. Crochet hook, No. 4.
MATERIALS REQUIRED.—1 ball Royal Society Crochet Cotton, size 5, any color, Crochet hook, No. 6.
Ch. 12 close in ring.
MATERIALS REQUIRED—1 ball Royal Society Crochet Cotton, color 1000, Pale Blue, size 5, and 1 ball Royal Society Crochet Cotton, White, size 5.
MATERIALS REQUIRED—3 balls Royal Society Crochet Cotton, color 1000, Pale Blue, size 5, and 1 ball Royal Society Crochet Cotton, White, size 5.