Table for computing differences of level from angles of elevation or depression 
(applicable to scale of i : 30000 ). 
r , 1 f 4 - r>/ii -f li-> for angles of elevation. 
ThfToronco of level — j — /j a for angles of depression. 
I> —distance in scale divisions ^ inch each; a = anglo of elevation or depression; //j = 50 feet X tan «/ 
— correction for curvature and refraction. 
Argument for h t is a; argument for h 2 is D. 
hi iu feet. 
D 
h 2 
D 
^2 
/ 
0 ° 
1 ° 
2 ° 
3° 
4° 
5° 
6 ° 
7° 
Scale 
divisions. 
Feet. 
Scale 
divisions. 
Feet. 
0 
. 000 
. 873 
1.746 
2.020 
3.400 
4.374 
5.255 
6.139 
000 
0 
1080 
00 
1 
.014 
.887 
1.700 
2. 035 
3.511 
4.389 
5.270 
6.154 
1 30 
1 
10*0 
01 
2 
. 020 
.002 
1.770 
2.040 
3.525 
4.403 
5.284 
0.109 
107 
2 
1008 
62 
3 
* *> c Ai\ 
A AIR 
5. 200 
0.183 
242 
3 
1107 
^ * A .• 
63 
., 
4 
1 
: 
i 
i 
2 
2 
2 
2 
] 
Localities: 
1 • Clint on,Texm* * 
2 * Clint on, south of courthouse * 
3 * not given 
4* Clinton - Clinch River hank * * 
5. Clinton, low hill south courthouse 
6 * Clinton * 
7-11* Clinton to Bohertsville • 
12-15. Clinton to Bohertsville * 
16* Big bend Clinch Biver ... * 
17,18. Clinton to Jackshoro .... 
19* Jackshoro to 31k Valley * • • 
20* ,31k Valley 
22* Jackshoro, section at 
24,25* Clinton to Knoxville .... 
26* Knoxville . 
27-29* Beaver Valley going southeast 
30-32. Knoxville and Shooks Cap road 
33. Chilhowee Park, Lake Ottosee * 
34,35* Beaver Valley . 
36* Edge of Butch Valley 
37. Clinton to,Oliver Springs,Karriman, 
etc. 
38. North and east of Harr iman * 
39. Harr iman to Spring City . 
40. Northeast of Spring City • • • • 
41. Near Spring City .. 
42-44. Spring City to Sequatchie ♦ • • 
45. Spring City to Sweetwater ... 
46. Tenmile Creek - Spring City to 
Sweetwater ..* 
47 .- 49 . Tenmile Creek. 
50,51. Sweetwater . 
52. Sweetwater to Loudon. 
53. Philadelphia, .. 
1 
3 
3 
5 
5 
7 
9 
11 
13 
15 
17 
19 
23 
23 
27 
27 
29 
29 
33 
33 
35 
37 
37 
37 
39 
43 
43 
43 
45 
47 
47 
