( 282 ) 
ZENITH P. DATE STAR R L E LATITUDE. 
Ist Series. | Er ie 
0° 1900 Dec. 2 a Eridani 53° | 3079 | 6 — 5211! 55/88 
1901 Jan. 11 é Persei 45 | 345 3 68 77 
Febr. 11 /? Aurigae 50 | 310 | 5 67.77 
we AD Canopus AT | 13 4 55.87 
90 Apr. 29 Ó Argus 148 31 8 11 69.05 
nn y Ursae maj. | 149 30 4 60.36 
180 wt Za fe Ursae maj. | 227 | 132 2 11 68.72 
we oe fe Argus 223 | 136 4 | 56.90 
270 1900 Oct. 11 a Gruis 312 | 228 4 11 68.65 
1901 Apr. 19 tt Argus 313 | 226 8 68.CO 
„20 A Ursae maj. | 318 | 221 | 5 60.79 
May 2 (2 Ursae maj. | 332 | 208 | 6 59.54 
225 o 13 Y Ursae maj. | 284 | 166 | 5 11 64.78 
rn Y Crucis 276 | 174 5 65.43 
24 Series. 
0° 1901 June 12 1 Ursae maj. 55° | 305° | 4 — 9°11’ 6836 
„15 ia Centauri 55 | 305 6 59,04 
Hw Qt, Centauri 55 | 305 2 58.86 
48 May 9 y Crucis 96 | 353 3 11 65.34 
June 10 7 Ursae maj. | 100 | 350 | 5 63.28 
90 » 5 f Crucis 144 | 36 | 4 11 67.29 
„6 1 Ursae maj. | 145 35 6 61.15 
135 May 31 /? Crucis 489 |. 81 | 6 11 63.07 
nn 7) Ursae maj. | 190 80 | 5 64.90 
From these results mean values must be computed for each position 
of the circle (i. e. combining 0° and 180°, and 90° and 270°), sepa- 
rately for the northern and the southern stars. 
Before combining the two series for this purpose, I have derived 
for each the mean error of the result of a double pointing by com- 
paring these separate results with the mean result for the whole 
observation. In the first series I have combined for this purpose 
the first pointing with the last, the second with the last but one 
