302 CATALOGUE OF THE DECLINATIONS OF STARS NEAR THE ZENITH 
Dec. M. — Pi.* M. — Gr M. — Str. M. — Arg M.—T. M.—R. M. — Ai. M.—J 
70 +05 +07 01 07 + 0.1 — 20 — 0 — 0.6 
60 + 0.8 + 0.2 09 — 04 103 apa — 0.8 —1% 
50 — 0.1 — 04 — 0.4 Did — 0.1 = 0.9 — 0.6 == L5 
40 SST — 0.3 E 0.5 = ().1 + 0.6 — 0.2 — 0.4 — 1.5 
30 i 10 + 0.4 00 Os + 04 -J- 0.5 soia 
20 10 + 0.2 — 0.2 + 0.8 + 0.6 + 0.2 + 13 
The discussion of o Cygni was taken from Mádler's larger work,T introducing the 
systematic corrections given later. 
For the Catalogues Ja., J. 2, and Ai. 2, the following investigations were made. 
A direct comparison of Ja. with .M. gave: — 
M. Dec. M. — Ja. 
35 — 0.06 10 comp 
45 — 0.20 g o 
55 — 0.28 T 
65 — 0.08 95 « 
The value M. — Ja. = —0^.2 was used throughout. 
The Catalogue J. 2 furnishes positions differing from the former volumes of the 
Radcliffe Observations by corrections given in Vol. XV. of that work, and repeated 
subsequently ; provided, however, as I have done, we apply the correction for 
difference between direct and reflected observations to the positions of the Special 
Catalogues for 1854-1857; this same correction having been already applied to the 
* Catalogue of Remarkable Objects," in the volume for 1856. 
Below 40° of declination, however, Mádlers systematic corrections are derived from 
much less material than for the circumpolar regions. We have, correcting Mádler 
by Johnson’s table in Vol. XV. of the Radcliffe Observations : — , 
Dec. M.—J. 2. Dec. M.—J.2. 
o II o H 
72 + 0.53 54 — 0.15 
66 + 0.41 48 — 0.20 
60 + 0.08 
Below 48° the value M. — J. 2 — —0”.20 was used throughout, from the fol- 
lowing considerations. Between 22° and 40°, — 
M.—J.2 = —0"18 30 comp. 
* I regret that Piazzi’s Catalogue was not at my disposal. A few positions for 1800.0 I owe to Prof. 
Brünnow's kindness. 
ES Untersuchungen über die Fix-stern-Systeme," Mitau, 1847, fol. 
