764 Mr. hutton’s Calculations to afcertain 
14. Depreffions below p in the N.E. quarter. 
Rings. 
I | 
2 | 
3 ! 
4 1 
5 1 6 1 
7 1 8 | 
9 ! 10 
1 1 | 12 
I Radii. 
80 | 
75 1 
70 | 
6 S J 60 1 55 1 
5 ° 1 45 I 
40 | 35 
30 1 20 
1 333t 
330 1 
3 2 5 1 
320 1 
300 i 
280 | 260 | 
24O | 220 | 
19° 1 150 
no| 30 
| 1000 
3 
520 | 
515 | 
505 j 
490 1 
475 1 460 | 
440 | 420 | 
400 j 330 
240 1 60 
| 1667 
4 | 660 | 
675 1 
690 | 
700 1 
7OO | 69O | 
660 | 620 | 
560 1 470 
350 1 25 
1 2 33 3 
0 
^t* 
00 
84O | 
840 | 
840 1 
840 | 830 | 
820 | 770 j 
720 | 620 
440 1 100 
1 3 °°° 
6 | 860 | 
880 
9 °° 1 
920 i 
930 1 93 ° 1 
9 IO.| 870 | 
830 j 7*0 
570 1 240 
1 3 66 / 
7 i 9 20 1 
920 j 
920 | 
880 1 
880 | 900 | 
930 j 940 1 
930 1 840 
680 1 610 
1 4333 
8 | 920 | 
84O | 
780 | 
780 1 
740 | 720 | 
770 1 870 1 
920 | 970 
900 1 630 
| 5 °oo 
9 
720 | 
670 | 
600 | 
600 1 
60O | 560 | 
580 1 670 1 
850 1 950 
940 1 600 
1 5667 
10 
700 | 
620 | 
520 1 
500 1 
500 | 500 | 
500 | 520 | 
720.) 920 
960 1 650 
1 9333 
" 1 
700 1 
600 | 
600 | 
600 1 
620 | 600 | 
580 1 560 1 
540 1 840 
920 1 770 
| 7000 
12 
72° | 
700 | 
680 | 
700 1 
720 | 740 | 
7 00 1 74 ° i 
570 1 800 
920 820 
I 7067 
720 | 
?20 | 
720 | 
720 1 
700 | 700 | 
720 | 720 
620 820 
900 1 920 
1 8333 
IS 
. Depreffions below 
p in the S.W. quarter. 
Rings. 
I 1 1 
2 | 
3 1 
4 | 
5 1 6 1 
7 1 8 
9 1 10 
11 | 12 
| Radii. 
O 
co 
d 
O' 
140 | 
100 | 
70 | 
40 1 40 1 
1 
1 
1 1 5667 
IO | 
400 1 
340 1 
280 | 
230 | 
190 1 150 1 
no| 30 1 
1 
1 1 6 333 
I I 
1 ">00 1 
470 1 
410 | 
340 1 
290 | 260 | 
230 | 200 | 
160 | 30 
1 140 
| 7000 
12 
i 5 00 1 
5 10 1 
5 ! 0 | 
490 
410 j 370 j 
33 ° 3 io I 
350 1 280 
150 | 260 
1 7667: 
13 i 480 1 
500 | 
500 1 
5 J o 
500 j 460 j 
430 | 260 | 
150 j 230 
280 | 360 
1 8333 
14 1 370 j 
390 1 
400 1 
430 1 
450 i 450 1 
400 210 | 
10 | 1 10 
280 | 230 
1 9 00 ° 
15 j 260 1 
260 | 
250 1 
260 | 
33 ° 1 33 ° 1 
31° 1 130 
1 
130 130 
1 9667 
16 
200 | 
200 | 
! 5 o| 
160 | 
170 220 | 
230 1 130 j 
1 
I io 333 
17 
i 130 1 
130 1 
90 1 
80 | 
90 | I IO | 
140 1 30 j 
1 1 
1 1 1000 
l8 
1 >0- 
20 | 
30 
10 j 
10 1 20 | 
30 1 1 
1 
1 1 |u 667 
