Rs eee a Le re a Te ee 
CGS Ree eee gee MR ee In. eee eee Pe ee eee re ee 
. 
Observations of the comet of 1807. 2 
se(41)=403 + d4784 + t—395 » p—223+n+ 32+:—108 
w(47)=463 * d4+702*t—435 + p—241+n4 74°14244 © 
x(48)=476 > d4671 + t—447 > p—245+n4 97+i—294 
v(4*)=478 + d4659* 14.51» p—246+n+4106 + i—197 
“x(49)=483+ 04651 + 2454+ p—246 + na-115 +i 4413 
x(49)=491 +d4617 *t—464 * p— 246+ +4146 *i—803 
x(47)=493 * d4593 + 1468 + p—242 +4170 + i—200 
“On(49) 3488 + 04.541 +1468 + p—229-n 4293-1177 
ve(4°)=484 + d4.516 * 1466 » p—-220 + n4.252 +74. 287 
(6° \=477 A450 * t-—464'* p21 + n4.267°14.424 — 
w(51)=447 + d4428 + t—440 ants 76° i xt Bae $66) ns 
x($*)=436+ pclnlsec 34+ p—167 + N4355 *7- _ 
x($ 3)=2427* d4397* (496 - e157 « aaarer 1—143 
se(§ 4)=395 *d4351 + t—398 - p—123 + n4412+i—589 
x(** )=384 *d4338 « t—387 » p—111 *n4425 +i—1082 
x(§ ©) = 206 * d4167 + t—219 + p+ 56+n+4+539+i—229 
Having obtained these equations it remained to deduce from them 
the values of the unknown quantities d, t, p, n,and i. The method, 
I thought most advisable to pursue for this purpose, is founded on 
the following assumed principles. 
1, That the sum of all the positive errors in the calculated longi- 
tudes should be equal to the sum of the negative ones. That is in 
symbols 0 apa Bilin se ee ? 
eC )tx(*)+x(5) .. + +2(8)}=0, j 
2. That the sum ofall the positive errors in the calculated latitudes 
should be equal to the sum of the negative ones. That is, 
w(#?)-px($)4x(81) 2. 4x(68)=0. 
3. That the sum of all the positive sictdhak Gc apuased wit 
in the observations made in October should asses a ee 
the negative ones. Thatis, 
= nants -* _(39)=0. 
