1016 



Subsurface Geologic Methods 



E420 

 N500 



E408 

 N5Q5 



<, E412 

 N500 



\ 



E416 

 N504 



E400 



E404 

 N500 



E408 

 N500 



E400 

 W51S 



E400 



E400 

 N505 



East Ord. 



Sequence ; 

 20 

 40 

 60 

 80 

 100 



4 

 24 

 44 

 64 

 84 

 104 



8 

 28 

 48 

 68 

 88 

 108 



iii" 



12 

 32 

 52 

 72 

 92 

 112 



16 

 36 



56 



76 



■ 96 



etc. 



Figure 536. (a) Local ordinate filing arrangement of tabbed Manila note-sheet 

 folders; (b) color and position of plastic elevation index tabs. 



