a passage in the 'De Institutione Divinarum Litterarum[94]' that the
practice of assimilating the last letter of the prefix in compound
words, like i_l_luminatio, i_r_risio, i_m_probus, though it had been
introduced, was as yet hardly universal; and similarly that the monks
required to be instructed to write qui_c_quam for euphony, instead of
qui_d_quam.

[Footnote 90: They were a compilation from the 'Artes' of Donatus,
from a book on Etymologies (perhaps also by Donatus), and from a
treatise by Sacerdos on Schemata; and a short Table of Contents of the
Books of Scripture, prepared in such a form as to be easily committed
to memory.]

[Footnote 91: Ad amantissimos orthographos discutiendos anno aetatis
meae nonagesimo tertio (Domino adjuvante) perveni.]

[Footnote 92: They were Donatus, Cn. Cornutus, Velius Longus, Curtius
Valerianus, Papirianus, Adamantius Martyrius, Eutiches, Caesellius,
Lucius Caecilius, and 'Priscianus grammaticus, qui nostro tempore
Constantinopoli doctor fuit.' Two names seem to be omitted by
Cassiodorus.]

[Footnote 93: As stated by Ebert (p. 481).]

[Footnote 94: Cap. xv.]

[Sidenote: Death of Cassiodorus, 575 (?).]

The treatise 'De Orthographiâ' was the last product, as far as we
know, of the industrious brain of Cassiodorus. Two years after its