to the Great Meridional Arc, &c. 
3i 
Their difference or arc = - - - 8° 58' 39", 92 whose measure is - 
To which add - - - - - 0120, 08 whose measure is - 
Gives the No. (n) of complete degrees = 9 o o ,00 whose measure (A) 
Then, referring to page 509 Philosophical Transactions for 
( 2 ) 
1818, Part II., we have n = 9 ; A = 544450,1 ; ci = (sin 2 . I 
— sin 2 . ^/) =,006042 • 6=(sin*/ 2 V — sin 2 / 1 ^/) + (sin 2 . ^ l 
— sin 2 . (0 /) + &c. = ,263137 ; ^—^== 60477, 76 
310,31 • A 
A — nrn!— 150,26; = (A — min') • = 3,45 and Q=5 7 1 
nearly. 
From which the following Table has been computed ; and 
it appears from this table, that the first degree in latitude 
9°34 , 44 // by the measurement is 0,67 fathoms in defect ; and 
that the degree in latitude 16 0 34*42" (which may be taken for 
i 6°34 / 44 ,/ ) by the measurement is 3,21 fathoms in excess. 
TABLE. 
Degrees in 
Fathoms. 
Latitude. 
(0 
(0 
O 
/ 
// 
m — 
= m -j- 0 
60477,76 
9 
34 
44 
( 2 ) 
(0 
m- 
-m-\-d 
60481,21 
10 
34 
44 
( 3 ) 
(0 
( 3 ) 
(0 
m — 
= m - hQ( 
sin 2 ./— sm 
•V) 
- 
60484,95 
1 1 
34 
44 
(+) 
(0 
( 4 ) 
(0 
m — 
= m + Q{ 
sin 2 ./— 
-sin 
\l) 
- 
60489,03 
12 
34 
44 
(S) 
(0 
(5) 
(0 
m — 
= ™ + Q( 
sin®./— 
-sm 
i -n 
- 
60493,42 
13 
34 
44 
( 6 ) 
(0 
( 6 ) 
(0 
m — 
= m + Q( 
sin 2 ./— 
-sm 
i -n 
- 
60498,13 
14 
34 
44 
(7) 
(0 
( 7 ) 
(0 
m — 
= m + 0( 
sin 2 ./— 
-siif 
! .<0 
- 
60503,18 
15 
34 
44 
( 8 ) 
(0 
( 8 ) 
(0 
m = 
= m + Q( 
sin 2 ./— 
-sm 
■•/) 
- 
60508,44 
16 
34 
44 
(9) 
(0 
(9) 
(I) 
m — 
+ Q( 
sin®./— 
- sin® 
•0 
- 
60514,03 
17 
34 
44 
Their sum 
544450 , 10 : 
L 
543104,02 
1346,08 
54445o,io 
