See also, Mendelssohn, Songs Without Words, No.

4, last five measures; No.

8, last eight measures; and others.
Another peculiarity of the final cadence is, that sometimes the _uppermost_ tone is the 3d or 5th of the tonic chord, instead of the keynote,--a significant device to counteract the dead weight of the cadence-chord, especially when prolonged as just seen.

See No.

10 of the Songs Without Words, last six measures; it is the tonic chord of B minor, but the tone _d_ (the 3d) is placed at the top, instead of _b_.
Also No.