Now, if there be a certain number of well-marked forms (say three) of development, and if the one of these coincide with an early period in the history of language, another with a later one, and the third with a period later still, we have three epochs wherein we may fix the date of the separation of the different languages from their different parent-stocks; and these epochs are natural, just in proportion as the forms that characterise them are natural.

Again, if each epoch fall into minor and subordinate periods, characterised by the changes and modifications of the then generally characteristic forms, we have the basis for subordinate groups and a more minute classification.

It is not saying too much to say that all this is no hypothesis, but a reality. There are real distinctions of characteristic forms corresponding with real stages of development; and the number of these is three; besides which, one, at least, of the three great stages falls into divisions and subdivisions.

1. The stage anterior to the evolution of inflexion.—Here each word has but one form, and relation is expressed by mere juxtaposition, with or without the superaddition of a change of accent. The tendencies of this stage are to combine words in the way of composition, but not to go further. Every word retains, throughout, its separate substantive character, and has a meaning independent of its juxtaposition with the words with which it combines.

2. The stage wherein inflexions are developed.—Here, words originally separate, and afterwards placed in juxtaposition with others, as elements of a compound term, so far change in form, or so far lose their separate signification, as to pass for adjuncts, either prefixed or postfixed to the main word. What was once a word is now the part of a word, and what was once Composition is now Derivation, certain sorts of Derivation being called Inflexions, and certain Inflexions being called Declensions or Conjugations, as the case may be.

3. The stage wherein inflexions become lost, and are replaced by separate words.—Here case-endings, like the i in patr-i, are replaced by prepositions (in some cases by postpositions), like the to in to father; and personal endings, like the o in voc-o, are replaced by pronouns, like the I in I call.

Of the first of these stages, the Chinese is the language which affords the most typical specimen that can be found in the present late date of languages—late, considering that we are looking for a sample of its earliest forms.

Of the last of these stages the English of the year 1849 affords the most typical specimen that can be found in the present early date of language—early, considering that we are looking for a sample of its latest forms.

Of the second of these stages we must take two languages as the samples.

1. The Greek.—Here we have the inflexional character in its most perfect form; i. e., the existence, as separate words, of those sounds and syllables that form inflexions is at its maximum of concealment; i. e., their amalgamation with the primary word (the essence of inflexion) is most perfect.