binding } { school arithmetic leaves } { school grammar cover } { school speller, etc. printed matter } { encyclopaedia } { novel } { school arithmetic binding } { school grammar leaves } { school speller, etc. cover } { encyclopaedia } { novel } { note book 4b. With a view of noting how when the intension is decreased the extension is increased, decrease one by one the common qualities of _peach tree_. 5a. In the following series what word could be substituted for “mammal” and why? Being, organized being, animal, vertebrate, mammal. Answer: Fish, reptile, or bird; because there are at least seven classes of animals which belong to the vertebrate family, any one of which could be used to complete the series. 5b. Form a series of which “Baldwin apple” has the narrowest extension. What terms may be substituted for “Baldwin apple?” 6a. In a series of which “pupil” is a member show that the increase and decrease is not proportional. The series: logic pupil, pupil, youth, human being, being. In decreasing the intension of “logic pupil” by dropping the one quality, logic, the extension is made larger by many more than one, as “pupil” represents many more objects than “logic pupil.” Therefore, the increase is not in proportion to the decrease. 6b. In a series in which “ruler” appears, show that the increase and decrease is not proportional. 7. From the following list select the proper words of the series; arrange them; draw and name the triangles: Caesar, brute, man, Roman, American, biped, sensuous being, animal, individual. =10. REVIEW QUESTIONS.= 1. What is a connotative term? Illustrate. 2. Which is the broader term, quality or attribute? Why? 3. When is a term used in extension? 4. Use the term triangle in intension. 5. As an aid to using a term in extension or intension what questions may one ask himself? 6. By asking these questions use the term _clock_ in both extension and intension. 7. By experimenting with the qualities of a rectangle show that as the intension is decreased the extension is increased. 8. Write a list of five connotative terms. Prove that they are connotative by illustrating their extension and intension. 9. The term metal { denotes } such qualities as element, metallic { connotes } lustre, conductor of heat and electricity. In the foregoing which of the two words following the brace should be used? Give reasons. 10. State the law of variation in two ways. 11. As one studies the law of variation what two facts are especially evident? Explain fully. 12. For the purpose of illustrating the law of variation form a series of which _desk_ is a member. Draw and name the triangles.