MEM. MUSEUM COMP ZOOL.VOL VI 
Gravel 
Diggings 
Lava Mud Fl 
oe / j ¢ Leh kfey Gravel 
Shalt 16 + M y r y (oworked 
owls) 
Shalt 8 
Ospect 
Bed- Rock 
7 om SECTION ACROSS ILLINOIS HILL AND SECRET DIGGINGS 
Shaftzi' Flow 
Scale 200 Feet to one Inch 
IN GRAVEL; MONTE CRISTO SLOPE 
ABOVE PORTWINE, SIERRA CO 
Tock 
1000. 
SECTION OF CLAY BANK AND LA PORTE GRAVELS 
to illustrate their relations and the cu 
PLAN OF 
PART OF UNDERGROUND WORKS AT 
BALD MOUNTAIN MINE 
FOREST CITY, SIERRA COUNTY. 
(Scale, SixHundred Feet to One Inch 
hire 
Quart 
Gravel 
Valea 
Stratum 
Quarlz 
Gravel 
Valcante 
Q Gravel 
WGN ie Roc 
WV Vertical Slate 
aU 
TTA RAC HUD EA aa ALL Bh uh 
SECTION OF BRANDY CITY FAULT 
{pp. Seale Thirty Feet to One J 
SECTION OF GRAVEL BANK 
AT PORTWINE 
Seale: Thirty Feet to On 
