ii. 32, where he is exhibiting the same sort of development as is here

indicated by John. For _historia_, _argumentum_, _fabula_ see the index. That these were elementary school exercises suggests that the subject of this sentence (_Illi_) refers not to authors, but to schoolboys engaged in developing a _materia_; but the reference can hardly be determined in PL, in which the whole sentence seems to me dubious.

[26] _Probandi colores._ The word _colores_ in this sense, unusual at this time, is characteristic of Seneca Rhetor, to whom John refers in II.