Continuation of the Measurement of the Base,—February, 1819, : : 367 
THE RODS. 
‘Thermometer, 
12 23 
s4 45 
© \fnclination of the 
~ |Hy pothenuse, 
Reduction to Horizon, 
Ascents. 
\Descents. 
REMARKS. 
| 
o 
te 
ov 
woo” 
o 
rc) 
25 \74°3 
40 (745 
to 
or 
we 
oo 
50 (60 
aw 
7/26 33 
| 
| 
59'S 
z li 6 oe 425 
| 2.40 |70" | 
335 j74" 
| 
/ 
| 
| 
| 
Langueite. Noniiis. 
146,285} 552 6230) 56-782 
1042 Boo 
1037; 10° 10 
210,562) 748 9372 82 TD) 
Laneuette: | Old N. |New N. 
600 259-2; 38-996) 
9 57) 0680) 
5 37] 0695 
7 29) 0715 
41] 0:70] 
10 5°5) 0.620) 
1277] 06451 
9 3-6] 0606 
6 77| 0685 
| 0-330 
834 422°2; 54:722 
2722 
0:30) 
0:22010 49 25. E, 
0.310 
0°330} 
0 330) 
0315 
5292) 
& 
35 40 LE. 
57 15 E, 
; 
+0242 + 009 
0432) 4+ 0:02 
1111) + 008) 
— 0:04 
“1186! + 0:53) 
9172; — 8 80] 10 3 1294) 31) 
17 
1-0] 1333 
31) 11 
06 
0-2) 
4) 
47) 
55 
158,05 
Brought Over. 
‘The new bypothenuse began at a point 13 inches below the termination of the last. 
Set the tripod 0:847 inch in advance, 
Resume fiom wire of plummet. 
Set the tripod +. inch in advance. 
{noreased the distance of wire to + inch more, and.recommenced at that)point, 
Set the tripod in advance **53 inch. 
Resamed iby, making the contact to’ the fast rod of preceding day, which was ifanad to have expanded ‘3 being, 
only 7j behiad the tripod. {t was covered with dew. 
Set tripod 0:082 inch in advance, 
Resume from plummet. 
Set the tripod 32 inch in advance. On resuming found it *#,° or 3'8 80ths more. This must be deducted the 
contact being made to the rod and not to the wire. ! 
Add |#, inch for each 100 feet measured to- -day on account; of an erfor of nonius just detected and set right 
=o K8 == fo = ‘1 inch. ' 
Hengeforward the new nonius before noticed is registered. The old one marked here 0:730, 
Set tripod and plummet in adgance ‘528 inch, and commence the new hypothenuse 6} inches below the termina-' 
tion of the last. 
‘The warping of this pain of rods had'during the few preceding hot and dry days, amounted to so muchas °8 inch. 
This would produce on every 100 feet au error of 2 X sho = SA; = peo Of an inch. 
SSS C«~WD@D a 
5A 
XIV. 
voL. 
