When several tones are struck at the same time, if they sound well together, they make what we call a chord.

But there are both major and minor chords: the major chord sounds joyous, gay; the minor, sad, dull, as you would say; the former laugh, the latter weep.

Now take notice whether I am right.

(I strike the chord of C major; then, after a short pause, that of C minor; and try, by a stronger or lighter touch, to make her listen first to the major and then to the minor chords.

She usually distinguishes correctly; but it will not do to dwell too long upon these at first, or to try to enforce any thing by too much talk and explanation.) Now I will tell you that the difference in the sounds of these chords is in the third, counted upwards from the lower note _c_, and depends upon whether you take it half a tone higher or lower, _e_ or _e_ flat.