FORMS OF MATTER. 33 



and classes of matter similar to those which have been 

 mentioned? 



Where, in such a scheme as we have worked out, 

 would grains of starch fall? Where a feather or a tooth? 

 Where would a watch or a microscope belong? Where 

 a dead bird or a dead tree? ' 



Is a planet or a drop of oil a "form of matter"? Is 

 either of these amorphous, or crystalline, or organic 

 (not living), or organic (living)? What then? 



Are the words organic and living synonymous? In 

 what way are they related? 



43. Some Definitions and Questions. What are the 

 differences between the unity, or degree of individuality, 

 of the sand-grain, the pebble, the crystal, the shell, the 

 plant, and the animal? 



Just what would be meant in any of these by organi- 

 zation or differentiation of parts? Which is the first of 

 our series of objects to show this quality in marked degree? 



To what purpose does such differentiation in the shell 

 seem to point? What is the effect of it on the degree 

 of individuality possessed by an object? 



Do activities and powers, or the structures, seem to 

 you more usable in furnishing the distinctions you have 

 been making between plants and animals and between 

 them and the other objects? 



Define: organic, inorganic, organism, living, individual, 

 differentiation of parts, quality, amorphous, crystalline, 

 in terms of the practical work you have been doing. 

 Are they needful terms? Compare your definitions with 

 the definitions of the books. 



44. The Order of the Mental Processes in the Laboratory Exercises. 

 a. Observation. What do you understand by observation ? What 

 of your own powers have you used in observing? Test the various 



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