(9) Show the difference between contradictory and opposite terms.

(10) Define dichotomy.

(11) Illustrate the Tree of Porphyry and indicate its use to scientists.

(12) Illustrate the difference between classification and division.

(13) Why should classification be the mode of procedure when dealing with immature minds?

(14) Illustrate the difference between an artificial and a natural classification.

(15) State and explain the two rules of classification.

(16) Show which of the following divisions are logical and which are not:

(1) The manifestations of the mind into knowing, thinking and feeling.

(2) Books into mathematical and non-mathematical.