[To face page 134.] 
General Table of the Meafurement of the Base of Verification in Romney Marsh, executed in the Autumn of 178*7, wherebv theanmr™i-r M ^ • r , 
to be 9 5 i2 T Vo S oV Yards, and the true, or correded Length in the Temperature of 62% 28532^- Feet PP g h 1S ° Und 
Days. 
Spaces 
Temperature. 
Correction 
for the 
difference. 
Days. 
Spaces 
meafured. 
Temperature. 
Corredtion 
for the 
difference. 
Days. 
Spaces 
meafured 
Temperature. 
Correction 
for the 
difference. 
Days. 
Spaces 
Temperature. 
Correction 
for the 
difference. 
Days. 
Spaces 
meafured. 
Yards. 
Temperatuie. 
Yards. 
Mean by 
1 5 Therm. 
diff. 
from 6z°. 
Yards. 
Mean by 
i5Therm. 
diff. 
from 62°. 
Yards. 
Mean by 
1 5Therm. 
diff. 
from 62°. 
Yards. 
Mean by 
i5Therm 
diff 
frcm 62°. 
Mean by 
1 5 Therm 
diff. 
from 62" 
oa 
In. Parts. 
oa. 
In. Parts. 
Nov. 
In. Parts. 
In. Parts. 
15 
100 
54-7 
- 7-3 
0.167 1° 
2100 
65.0 
+ 3.0 
+ 0.06867 
4100 
55-2 
- 6.8 
0.15565 
6lOO 
42° 1 
-19.9 
0 - 4555 1 
8100 
0 
0 
l6 
200 
62.7 
+ 0.7 
+ 0.01602 
2200 
64.1 
+ 2.1 
+ 0.04807 
10 
4200 
55-3 
- 6.7 
0 -I 5336 
Nov. 
6200 
39-3 
-22.7 
0. 5 iq6o 
8200 
2 5- 7 
3 °° 
61.3 
- 0.7 
0.01602 
23OO 
56.7 
- 5-3 
O.I2I32 
43OO 
53-6 
- 8.4 
0.19228 
21 
63OO 
43-3 
-18.7 
0.42804 
Nov. 
8300 
3 Q. Q 
D 
400 
57 -o 
- 5 -° 
0. 1 1445 
3 ° 
24OO 
58-7 
- 3-3 
0.07554 
44OO 
49 0 
-13.0 
0.29757 
6400 
46-5 
-25.5 
0 - 35*79 
29 
8400 
34.8 
— 27. 2 
5 °° 
52.2 
- 9.8 
0.22432 
2500 
59-5 
- 2.5 
0.05722 
12 
4500 
5 o.i 
-11.9 
0.27239 
65OO 
45-6 
— 16.4 
0 - 3754 ° 
8500 
40. <: 
600 
53 - 6 
- 8.4 
0.19228 
3 1 
2600 
57-3 
- 4-7 
0.10758 
4600 
47-9 
-14. 1 
0.32275 
22 
6600 
42.5 
-19-5 
0.44635 
8600 
42.2 
20 
700 
46.8 
-15.2 
0-34793 
2700 
54-6 
- 7-4 
0.16939 
13 
4700 
44-7 
- 27-3 
0.39600 
6700 
42.2 
- 19.8 
0.45322 
3 ° 
8700 
20. c 
y'l 
800 
58.9 
- 3 - 1 
0.07096 
Nov. 
2800 
53-9 
- 8.1 
0.18541 
4800 
44.8 
—17.2 
0-39371 
6800 
41.2 
-20.8 
0.4761 1 
8800 
44.3 
— 17.7 
23 
900 
53-9 
- 8.1 
0.18541 
I 
29OO 
49 -° 
-13.0 
0.29757 
4900 
4 L 3 
— 20.7 
0.47382 
23 
6900 
39-8 
-22.2 
0.50816 
Dec. 
8900 
46.0 
IOOO 
55-3 
- 6.7 
0.15336 
3000 
54 -° 
- 8.c 
0.18312 
14 
5000 
41.8 
— 20.2 
0.46238 
7000 
39 ° 
-23.0 
0.52647 
I 
9000 
43 -o 
— lq.o 
24 
1 100 
55-7 
- 6.3 
0.1442 I 
3 T0 ° 
5°-9 
— II. I 
0.25408 
51OO 
42.9 
-19.1 
0.43720 
7100 
37-7 
- 24-3 
0.55623 
9IOO 
45 6 
— 16.4. 
1200 
50.0 
— 12.0 
0.27468 
2 
3200 
49.1 
— 12 9 
0.29528 
15 
5200 
45-3 
— 16.7 
0.38226 
24 
7200 
36.2 
-25.8 
0.59056 
9200 
48.7 
— 1 2 . 7 
l 3 °o 
55-2 
- 6.8 
0.15565 
3300 
50-4 
— 1 1.6 
0.26552 
53 00 
44.1 
- 17-9 
0.40973 
73 °° 
42.1 
-19.9 
°- 4555 r 
3 
9300 
41.1 
— 20.0 
26 
1400 
59 -i 
- 2-9 
0.06638 
3400 
48-5 
- J 3-5 
0.30901 
5400 
40.4 
— 21.6 
0.49442 
7400 
40-5 
-21.5 
0.49213 
94OO 
46.9 
— I^. I 
1500 
60.0 
— 2.0 
0.04578 
3500 
42.6 
-19.4 
0.44407 
l 6 
55 00 
4 i -5 
— 2O.5 
0.46924 
26 
75 oo 
35-2 
-26.8 
0.61345 
■4 
9512.2454 
48.4 
— 12.6 
27 
1600 
59 * 
- 2.9 
0.06638 
5 
3600 
52-3 
- 9-7 
0.22203 
5600 
44-8 
— 17.2 
0.39371 
7600 
39-8 
- 22.2 
0.50816 
1700 
63.1 
+ 1.1 
+ 0,02518 
3700 
53 -° 
- 9.0 
0.20601 
5700 
44.6 
-17.4 
0.39829 
7700 
38.5 
-23.5 
0-53791 
1800 
68.1 
+ 6.1 
+ 0.13963 
3800 
52-4 
- 9.6 
0.21974 
17 
5800 
40.6 
— 21.4 
0.48985 
27 
7800 
33-6 
—28.4 
0.65098 
1900 
57-9 
— 4.1 
0.09385 
' 
3900 
47-3 
-14.7 
0.33648 
5900 
39-4 
— 22.6 
°- 5 I 73 I 
7900 
38-9 
-23.1 
0.52876 
2 9 
2000 
60.8 
— 1.2 
0.02747 
7 
4000 
55-6 
- 6.4 
0.14650 
6coo 
41-3 
20.7 
0.47382 
28 
8coo 
32-7 
- 29-3 
0.67068 
- 
-2.16540 
— 3 - 779 1 3 
- 7-58574 
— 10.14802 
Correction 
for the 
difference. 
0-58827 
0.52189 
0.51502 
0.62261 
0 . 4 Q 2 I 2 
O.45093 
O.jalOJ 
O.4O5I5 
O.36624 
O.4349I 
0.37540 
O.30444 
O.4784O 
0 . 345 6 4 
O.34942 
6.97148 
■ IO.I4802 
7-58574 
3- 779*3 
2.16540 
Total Correction — 36.64977 
Feet. In. 
From the above Table it appears, that the total apparent length of the Bafe, as given immediately by the Steel Chain, was 9512^^ yards, which are equal to 28536 8.835 
The correftions in the above Table, and others ipecified in the Text, being fubtra&ed from the apparent length, — — — 3 9.799 
There remains, for the true length of the bafe in the temperature of 62° of Fahrenheit, — — — — 
equal to — 
28532 1 1.036 
28 53 2 tot Feet. 
SECTION 
