No Conclusion. [Fallacy of Unlike Eliminands with an Entity-Premiss.]

9. His songs never last an hour.
A song, that lasts an hour, is tedious.
His songs are never tedious.

Univ. “songs”; m = lasting an hour; x = his; y = tedious.

x1m0m1y′0x′y1 [Fig. III.

Conclusion wrong: right one is “Some tedious songs are not his.”

10. Some candles give very little light;
Candles are meant to give light.
Some things, that are meant to give light, give very little.

Univ. “things”; m = candles; x = giving &c.; y = meant &c.

mx1m1y′0xy1 [Fig. II.

Conclusion right.

11. All, who are anxious to learn, work hard.
Some of these boys work hard.
Some of these boys are anxious to learn.