See, again, No.

37 of the Songs Without Words and note the changes in the formation of the otherwise uniform six-tone groups.
LESSON 1 .-- The student is to study this chapter thoroughly, and write answers to the following questions; if possible, without reference to the text:-- 1.

What does Form in music mean?
2.

Define the conditions which constitute good form.
3.

When is a composition faulty in form?
4.