Continuation ofthe Measurment of the Base,—Webruary, 1819. 
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| | j fe sactles | Set tripod in-adyance 0 292 inch. | 
i ie mile ance 6 0 4905 E,| -0868}-+ 022) 1.0) 121 Resume by makiog*the contact to the wice of the’ plummet 12 inches above the termination of the last hypothe 
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Reales Set tripod in advance ‘35 inch. 
| l19'so| 191 39 I39- 0 47 0) ©) -1124)-+ 0-18! 0-7} 16-4 Resume from wire 82 inches above the termmation.of the last hypothenuse. 
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| | 145-450 The rod 4:5 ‘overshot the|23d_ picket by several feet, ‘A ‘plummet with silk thread, belonging to the preat-circle, 
i = | 2 ‘ — 0:02 being brought over the\centre af \the picket, a mark was made on thé rod where it intersected. The following 
| | | 0:33}. pair of rods after being carefully adjusted, were'deranged, ‘by a chair falling against them. It was necessary 
j ! Beas therefore to raplace the 4°5 rod, and by means of the plummet, and the mark which had been made to bring 
| | 0235 it iato the exact position it was originally in, This was done with great care, the only difference being the| 
| ee semidiameter of the thread = ‘025 inch which must be subtracted, 
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} at 3 10-4640 CRF, Set tripod in advance 34:3 inch = ‘391. | 
| i | 345 leg 0-315) — 0:02) Resumed by making the contact to the rod, yhich had contracted 1% boing 33 from wire of plummets 
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31) 10 pecs 1 16 35 Ej} +2482) -- 022) os! 92:3 ‘The new hypothennse begins 10 iaches below the termination of the old, and’221 inoh in advance, 
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| | 2.49. |53-3 ager 1+ 0:19) Set tripodin advance “12 inch. 
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: 3 20 164° 5 0/315) Set tripod +2" inch in advance. 2 
3 54 |69- Ze Fea — 0:03) , Resume by making contact to sod which had contracted ; being %;? behind the wire, . . 
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