Table for computing differences of level from angles of elevation or depression 
(applicable to scale of 1 : 30000 ). 
Difference of level— I + for ftn 8 lea of elevation, 
lunorenco 01 level - r)//| + ha for ang i 080 fdepression. 
1) - distance in scale divisions inch each; « = auglo of elevation or depression; 7f, = 50 feet X tan a; 
h g -= correction for curvature and refraction. 
Argument for 5, is a; argument, for h 3 is D. 
7ij iu feet. 
D 
7*2 
T> 
r 
0 ° 
1 ° 
2 ° 
3° 
4° 
5° 
0 ° 
7° 
Scale 
divisions. 
Feet. 
Scale 
divisions. 
F oet. 
0 
.000 
.873 
1.746 
2. 620 
3.496 
4.374 
5.255 
6.139 
000 
0 
1080 
60 
1 
.014 
.887 
1.760 
2.635 
3.511 
4.389 
5. 270 
6.154 
1 30 
1 
1080 
81 
2 
3 
. 02!) 
.902 
1.775 
2.649 
3.525 
4.403 
A AIR 
5.284 
ft. 299 
6.169 
0.183 
107 
242 
. 2 
3 
1008 
1107 
A A . 
62 
63 
1 
1 
1 
1 
1 
1 
1 
1 
l 
< 
o 
Heiskell: 
upper = Ottosee, Loc®35 * . * 29 
red sandstone and shale at Locs.107,100, 
Buzzard Roost Gap, may be * * * 93 
Heiskell-Beaver Ridge part of Pearisburg 
trough represented by Buzzard Roost 
(Rooky Face) and Dalton sections « 93 
Hewassee Gap and Gee Creek - Lenoir -Chicka~» 
mauga limestone at, Loc#67 • 63 
Holston marble: 
at Loc#54, Philadelphia,Tenn. . 49 
not recognized east of Stockton Creek, 
Loc.58 *.. 53 
Holston marble and Tellico sandstone = 
equivalent of thin band in Beaver 
Creek Valley.24 
Jacksboro,?enn.: 
to Elk Valley. 15 
section at. 19 
Jacksboro,Utica*Bays,and Rockwood in 
Loe.24,Knoxville * 23 
Knox: 
top of, at Robertsville .... 7 
strata above of Stones River age . . 5 
Knox beds at Gareyville described . . 13 
regular succession from Lee conglomerate 
down to* • . • • • •• 19 
at Loc.64, east of Athens.59 
in section at Locs.61-65,east of Athens 61 
at Locs.97-105,Ringgold,Ga. ... 91 
oat Locs.107,108, Buzzard Roost Gap . 93 
at Loc *109,Dalton to waterwords and cot¬ 
ton mills 
95 
