QUESTIONS. 



CThe numbers refer to the pages.] 



CHAPTER I. 



9. What is said of the forms of minerals? In what sense are all 

 minerals solid ? Illustrate the relation which heat has to the forms 

 of matter. 



10. What are the three kinds of substances that are not mineral? 

 State what is said about the lifeless period of the earth. 



11. What is said about the introduction of life ? What of the dif- 

 ferent results of chemical and of vital action ? Explain what is called 

 decay. Give in full the illustration in regard to the egg. 



12. What is said of mineral matter in regard to organic substances? 

 Of what materials have many rocks been made ? What is said of 

 carbonate of lime ? What of the flinty rocks ? 



13. Give examples of simple minerals. What metals are never 

 found uncombined with other elements? What metals are found 

 both native and in combination ? With what are they combined ? 

 What is said of oxygen ? Of hydrogen ? Of chlorine ? Of sulphur 

 and carbon ? What is said of the different degrees in which miner- 

 als are compound ? Mention the composition of mica and of lapis 

 lazuli. 



14. What is said of granite as a mixture of mineral compounds ? 

 State the relations of Mineralogy, Chemistry, and Geology. 



CHAPTER II. 



14. What takes place in crystallization ? What are familiar exam- 

 ples of crystals ? What is the arrangement of the crystals of mica ? 



15. What is said of perfect and imperfect crystallization? What 

 is an octahedron ? What is said of the sizes of crystals ? 



16. State fully the difference between the mode of crystallization 

 and of vital growth. What is said of crystals with curved lines? 

 What of spherical forms in some rocks ? What of the arrangements 

 of crystals ? 



17. What is said of the manner in which mineral matter is depos- 

 ited in living substances? What vegetable substances assume crys- 



