A vowel is a letter which forms a perfect sound when uttered alone; as, a, e, o.

A consonant is a letter which cannot be perfectly uttered till joined to a vowel; as, b, c, d.[93]

The vowels are a, e, i, o, u, and sometimes w and y. All the other letters are consonants.

W or y is called a consonant when it precedes a vowel heard in the same syllable; as in wine, twine, whine; ye, yet, youth:  in all other cases, these letters are vowels; as in Yssel, Ystadt, yttria; newly, dewy, eyebrow.

CLASSES OF CONSONANTS.

The consonants are divided, with respect to their powers, into semivowels and mutes.

A semivowel is a consonant which can be imperfectly sounded without a vowel, so that at the end of a syllable its sound may be protracted; as, l, n, z, in al, an, az.

A mute is a consonant which cannot be sounded at all without a vowel, and which at the end of a syllable suddenly stops the breath; as, k, p, t, in ak, ap, at.

The semivowels are, f, h, j, l, m, n, r, s, v, w, x, y, z, and c and g soft:  but w or y at the end of a syllable, is a vowel; and the sound of c, f, g, h, j, s, or x, can be protracted only as an aspirate, or strong breath.

Four of the semivowels,—­l, m, n, and r,—­are termed liquids, on account of the fluency of their sounds; and four others,—­v, w, y, and z,—­are likewise more vocal than the aspirates.

The mutes are eight;—­b, d, k, p, q, t, and c and g hard:  three of these,—­k, q, and c hard,—­sound exactly alike:  b, d, and g hard, stop the voice less suddenly than the rest.

OBSERVATIONS.

OBS. 1.—­The foregoing division of the letters is of very great antiquity, and, in respect to its principal features sanctioned by almost universal authority; yet if we examine it minutely, either with reference to the various opinions of the learned, or with regard to the essential differences among the things of which it speaks, it will not perhaps be found in all respects indisputably certain.  It will however be of use, as a basis for some subsequent rules, and as a means of calling the attention of the learner to the manner in which he utters the sounds of the letters.  A knowledge of about three dozen different elementary sounds is implied in the faculty of speech.  The power of producing these sounds with distinctness, and of adapting them to the purposes for which language is used, constitutes perfection of utterance.  Had we a perfect alphabet, consisting of one symbol, and only one, for each elementary sound; and a perfect method of spelling, freed from silent letters, and precisely adjusted to the most correct pronunciation of words; the process of learning to