1. When are substances heterogeneous as regards each other? 2. When is a mixture, as cement, said to be heterogeneous? when homogeneous? 3. What is the special significance of non-homogeneous? 4. How does miscellaneous differ from heterogeneous?

EXAMPLES.

My second son received a sort of —— education at home.

Courtier and patriot can not mix
Their —— politics
Without an effervescence.


HIDE ([page 197]).

QUESTIONS.

1. Which is the most general term of this group, and what does it signify? 2. Is an object hidden by intention, or in what other way or ways, if any? 3. Does conceal evince intention? 4. How does secrete compare with conceal? How is it chiefly used? 5. What is it to cover? to screen?

EXAMPLES.

Men use thought only as authority for their injustice, and employ speech only to —— their thoughts.