LESSON III
In this weaving mat the light squares represent the a form, the dark ones, the b form. The arrow marks the starting point, and the reading proceeds from left to right in each line. The cipher message is “Mary had a little lamb.” Any sentence containing the requisite number of letters can be inserted on the same principle.
LESSON IV
This lesson embodies what may be designated as a symbolic cipher design. This design conveys the idea of the setting sun, and hence the cipher word contained within is “sunset.” Red sticks represent the b form, orange sticks, the a form. The arrow marks the starting point, and the reading proceeds in a clockwise direction.