§ 246. Point out that these nouns are irregular only in having two bases. Note the shortening of ī before m in vim (cf. § 12.2). Pronounce and have the class repeat the forms of iter. Show that in spite of irregularities they follow § 74.b,d.
§ 249.I. Refer to the historical fact that Caesar built the first bridge over the Rhine. Imperātor, vir clārus, in English simply the distinguished commander.
§ 249.II.7. On the position of foot soldiers see Manual on § 245.II.1.
Review the word lists in the usual way. Put the emphasis of the "Review Questions" on the third declension. Fill out the summary, § 520, on the board, the pupils dictating; or include it in the written test. In this review, as in all others, include questions on the conjugation of verbs. Drill on verbs cannot be overdone.
§ 254. Observe that in the declension of ācer the masculine and feminine forms are alike in all cases except in the nominative singular, and that the neuter ācre is declined just like īnsigne.
§ 256.1. As we are told in § 257, there are some adjectives of one ending having consonant stems. Many of these have adopted all the forms of i-stems, but frequently we find both -ī and -e in the ablative singular.
Explain that the letters S. P. Q. R. below the eagle in the cut stand for Senāltus Populusque Rōmānus. They were used with great frequency on all sorts of objects to mark the power or sanction of the Roman government. By an interesting survival the same letters may still be seen in modem Rome on fire engines, public wagons, and other objects belonging to the city government