4 
Table for computing differences of level f rom angles of elevation or deprt 
(applicable to scale of i : 30000 ). K 
f 4 . t>/» , 4- / 1 ., for angles of elevat ion. 
TMfforonco of levels -j + h for ang i es 0 f depression. 
D = distance in Beale divisions g 0 inch each; a = angle of elevation or depression; h x —r> 0 feet X 
h v —correction for curvature and refraction. 
Argument for h, is a; argument for h 2 is I). 
ssion 
tan a; 
7i, iu feet. 
0 ° 
1 ° 
2 ° 
3° 
4° 
5° 
0 ° 
7° 
. 000 
. 873 
1.740 
2.020 
3.490 
4.374 
5.255 
G. 139 
.014 
.887 
1.700 
2.635 
3.511 
4.389 
5.270 
0.154 
.029 
.902 
1.775 
2.649 
3.525 
4.403 
6.284 
0.109 
1 ■ ■ 
*• *f\ 
A A IQ 
A 9.0!) 
6.183 
D 
Scale 
divisions. 
000 
1 30 
107 
•JU'2 
K 
I) 
li 2 
Feet. 
Scale 
divisions. 
Feet. 
0 
1080 
GO 
1 
10*9 
01 
2 
1098 
02 
3. 
1107 
Philadelphia ,?onn. - 
Loc.53 . . . . 
Loc«54, lOS. of 
* * * • ® 
Murfreesboro Is#: 
Blue Is# at Loc#46,Tenmile Creek, looks like# 43 
rock at Loc .79, Oltewah to Cleveland by 
way of Mahon Gap, looks like Bid ley 
and Murfreesboro * 73 
upper Lebanon at Loc•96,Chattanooga to 
Ringgold, probably equivalent to bed 
at 8 helbyville,Murfreesboro,and Colum¬ 
bia . 
I 
V 
pi 
Ocoee — in note #••••••••• 
Oliver Springs, K&rrimn,RockWQod,and 
Spring City - trip to from Clinton . 
Oltewah, ?enn.: 
Cleveland west to, Locs#75,75a . 
northeast of, Loc.76 
Oltewah to Cleveland by way of Mahon 
Gap, Locs#77-?9 . 
Oltewah to Cleveland, Snow Kill P#0., 
Loc .30.. 
Oran,Treadwell,Cohutta Mt#, etc., spent 
July 27 at . 
Ordovician butting against St# Louis,Loc.42 < 
Ordovician-Silurian band. Buzzard Roost(Bocky 
Face),just west of Chattanooga lit# ,at 
Loc#106,Ringgold to Dalton . 
"Passage beds'*,compare with basal beds of 
of Lenoir at Marble Bluff. 
Pearisburg trough: Buzzard Boost(Pocky Face) 
and Dalton sections appear to represent 
V 
N 
87 
76 
33 
92 
53,55 
93 
^ Heiske11-Beaver Bidge part of # 
'Pierce Is#: 
limestone at Loc. 1.3,Clinton to Boberta- 
ville, looks like . 9 
in comments on Raccoon Valley .... 24 
at Loc.77,Oltewah to Cleveland by way of Mahon 
Gap, well shown ....... 73 
