To these may be added the following numerals below one hundred, similar to those in the table:
We have thus far spoken of the Kharoṣṭhī and Brāhmī numerals, and it remains to mention the third type, the word and letter forms. These are, however, so closely connected with the perfecting of the system by the invention of the zero that they are more appropriately considered in the next chapter, particularly as they have little relation to the problem of the origin of the forms known as the Arabic.
Having now examined types of the early forms it is appropriate to turn our attention to the question of their origin. As to the first three there is no question. The
