15 



also includes the different series of local or regional 

 forms. 



Ecological series. Here are exhibited the actions of 

 the animal and plant as a whole; its habits; and its re- 

 lations to other forms, whether as friends or enemies, 

 or as prey, to its physical surroundings, as tempera- 

 ture, humidity, etc. — in general to its environment. 



Economic series, including the plants, animals, 

 minerals } and rocks of use to man, with often the 

 methods of obtaining and utilizing them. 



SYNOPSIS OF COLLECTIONS 



Geology 



Composition of the earth: Sail Case 



Descriptive mineralogy. . Geology 101 



Systematic mineralogy.. '' 102 



Rock formation " 104 



Systematic lithology . . . . " 104 



Form of the earth " (c) 



Structure of the earth ' ' (c) 



History of the earth : 



Geography at different pe- 

 riods " (c) 



Characteristic rocks of dif- 

 ferent periods " (a) 



Characteristic life at dif- 

 ferent periods '' 106 



