From the Project Gutenberg version of Exercises in Knitting by Cornelia Mee.
"Cast on 122 stitches." (19 sts per repeat times 6 repeats = 114 sts, so 8 sts left over for the edges.)
Shown with a cast-on count of 38 stitches.
1 2 3 4 5 Horizontal repeats
1 2 3 4 5 Vertical repeats