Type I. the leading thoughts are coordinate

. 
In the first type of the expository paragraph which we shall study, the main thoughts used to amplify the fundamental idea stand to each other in coOrdi¬nate relation. Each is directly related to the first
sentence, but not to the others. The following extract belongs to this type :
Men often remind me of pears in their way of coming to matutity. Some are ripe at twenty, like human Jargonelles, and must be made the most of, for their day is soon over. Some come into their perfect con¬dition late, like the autumn kinds, and they last better
than the summer fruit. And some that, like the Winter¬Nelis, have been hard and uninviting until all the rest have had their season, get their glow and perfume long after the frost and snow have done their worst with the orchards. \ Beware of rash criticisms, the rough and astringent fruit you condemn may be an autumn or a winter pear, and that which you picked up beneath the same bough in August may have been only its worm- eaten windfalls.
SUGGESTIONS.- Prove that this paragraph obeys the laws of unity and emphasis. - Prove also that it makes generous use of parallel construction.
Sentence Relation in Type I. The follow¬ing diagram shows. the sentence relation in the paragraph we call Type I.:
Put diagram here 
EXPLANATION OF THE DIAGRAM
The line marked i stands for the first sentence and expresses the fundamental idea of the paragraph. What is the idea?
The figure marked 2 stands for the second sentence, which is directly subordinate to the thought of the first. The figure marked 3 stands for the third sentence, which is directly subordinate to the thought of the firstand not immediately connected with the second sentence. 
The figure marked 4 stands for the fourth sentence, which is directly subordinate to the thought of the first and not connected with the second or the third sentence. 
The figure marked 5 stands for the last sentence, which sum¬marizes the thought of the whole and returns to the first sentence.
The Two Ways of Organizing Expository Material.
The Use of Series in Type I. While both of the methods mentioned in the preceding section occur in paragraphs belonging to Type I., the use of material of one kind is the more common. We may thus have a paragraph made up of a series, either of causes or effects, or definitions, and so forth. Sections below treat of the different kinds of series that the first type of the expository para¬graph may employ.
A Series of Instances or Examples
A Series of Repetitions. 
A Series of Analogies
A Series of Definitions. 
A Series of Reasons. 
A Series of Kinds or Classes. 
A Series of Functions or Uses. 
A Series of Advantages or Disadvantages.
A Series of Contrasts or Antitheses. 
A Series of General Directions.
Examples of Type I. to be Classified for the Kind of Series.