LOCAL GEOLOGY 4] 
can break rocks and get a clean fracture; with the 
sharp end you can chip, cut, and split. 
Then, again, you should form a collection of 
specimens illustrating your local geology. If you 
have igneous rocks near you, secure nice cleanly 
fractured pieces of them, 
pieces that will show their 
texture and component 
minerals. Put each speci- 
men in a suitable card- 
board tray, which you can 
easily make, and attach a 
label giving name of the 
specimen and locality in 
which it was found. The 
Specimen trays can be placed 
neatly side by side and end 
to end in a shallow box, 
which will serve better. if 
it has a glass lid. Collect 
Specimens of minerals, such 
as quartz, calcite, iron py- 
rites, and arrange them in 
trays in a similar way. Do 
the same with the stratified 
rocks, and even with such 
surface deposits as sand, 
clay, and soil. Let every- 
Fie. 6.—A Gnroroatsr’s © 
HAMMER, 
thing that exists in your geological area be'repre- 
sented in your geological museum. You will, of 
course, arrange your specimens in their proper order, 
and be exceedingly careful in the naming of them. 
Aim at accuracy in every detail of your work : don’t 
6 
