What is dolomite? Of what does clay consist? Clay slate? What modifications does clay slate present? What is diluvium?
CHAPTER II.
SECTION I.
What is the primary division of rocks?
Upon what principle are the unstratified rocks divided?
Upon what principle are the stratified rocks divided?
Why are the non-fossiliferous called metamorphic rocks?
Name the four classes of rocks.
SECTION II.
What is the most abundant plutonic rock?