172 
Mr. Ivory on a new Method of deducing 
V = 1-094516 
b' — 0-080149 
z=z 4*533362 . . . log. 0-6568991 
log. a = o-32b449b 
h' — X 1*002846 = -[- 0*000268. 
From the two last errors we finally get p = 0-17620 ; which 
must be substituted : then 
r"= 1-252969 
r'"= 1-014582 
V — 1-093821 
= 0-079909 
4*535102 . . . log. 0-6565888 
^ X 1 *002846 = 0. 
log. a = 0-3282944 
From these values we get 
-V 
rb 
= cos. (p <p z=z 59° 48' 14' 
— V 
r^r' 
~1T 
— COS. (p' (p' z==. 106 9 30 
= - cos. >!. = + cos. 4.' •.• f t = 45 " 
1 4/ = 66 38 15 
anomalies • 53 33 3 1 
I u'= — 4;' = gg gi i_5 
Then, to find the perihelion distance D, we have 
D = r cos.* ^ = 9-9504285 logarithms 
D = r'cos.* ~ = 9-9504285. 
The times corresponding to the anomalies, taken from a 
table of the comets, are as follows, viz. 
