The tense signs are all without signification, being single letters or syllables. The perfect is marked not so much by an affix, as by changing, the termination of the verb in various ways, but chiefly by shortening and strengthening the sound. All tense designations are placed at the end of the word, except the augment for past time. If by augment we mean a vowel sound prefixed to the verb in certain tenses in addition to their usual signs, then the Mexican is the only American language which possesses one. The modes are designated by loosely attached particles, also by a different structure of the tenses, and in the second person a peculiar pronoun. Thus the Mexican conjugation consists of true verbal forms, not of separate parts of speech of independent significance; but the elements of these forms are easily recognizable, and can be reached without difficulty. The most difficult to analyze, and hence the most nearly approaching our conjugations, is that of the Totonaca language. The personal signs differ from the pronouns. That of the 2d pers. sing. is not easily recognized, and several forms of it must be assumed. Its position as a prefix or suffix differs, and it is variously located with reference to the other verbal signs. Still more difficult is it to distinguish the tense signs. There are three different systems of prefixes and suffixes in the conjugation, and the plan on which these are combined with each other serves to distinguish the tense. But only a few of these affixes really appear to designate tense; of the others this may be suspected at best, and of others again it is improbable. Thus there are verbal affixes which cannot be considered to designate either persons, modes or tenses. The stem undergoes little change, but the attaching of the affixes to it renders it impossible to apply the same scheme to all verbs, and hence leads to a division of them into three conjugations. Some tenses have two different forms, without any change in signification. _2. Divisibility of Verbal Forms to allow the insertion of governed parts of speech._ Of the Mixteca tongue it cannot exactly be said that it divides the essential parts of the verbal form to allow the insertion of the governed object. As a rule, the object is merely appended, and where it appears in the form itself, it is inserted between the stem and the suffixed pronoun. The latter is, however, no necessary part of the form, as it is dropped when the verb is governed by a noun, and can always be replaced by prefixing the indefinite pronoun. Nor is it mentioned that the Beto language includes the object in the verb. The Carib tongue unites the governed pronoun with the verbal form, and in some cases the personal sign is thus displaced. But here the object is not inserted in the middle, but is prefixed or suffixed. Our information about the Tamanaca language discloses nothing on this point.