6 CATALOGUE OF STARS WITHIN 
TABLE I. 


Thermom. 



Length 
Plate | Ob- Mines ae End of 
1895. _|server. Barom. \Attached|External el ee Exposure. g : 
| | PR Rigged RAP 
mm | = , m Ss Lim, 's Vm oo 
Sept. 16 D 757.2 + 8.4 | + 7.8 D> .O aor SO |e Sos aie 89 Oo 
no. (2 | een] 52 50 
20 , ah ae! ; 
Sept. 16 | D 757.2 a8 ol eet st G7 CO | aa) 32 $50, | 2 24 Gees 
no. 4 a 36 40 | (10 24)1(89 0)" 
20 37 46 
Sept 160 Dr. 175685 ti 822.) 4 Goal) 6. al eon ae Yr 244) GEo-o 
no. 5 | 5 4a0 14 13 |(13 24) | (89 0) 
20 15 9 
Sept. 16 | Dirt) 5562 at ae Ol eG oe bOs eee ees 1.24.1 Se <0 
no. 7 St U0 46 47 
20 Az, 53 
Sept. 18 D 7S51E2 gO} +) 8.4 655 SO a2" GIG ee eee 
no. I es, Fe a 
| 20 26 40 
Sept. 18 D. Sis + 8.5 | + 8.0 OP SOT Tess ag TO), 24 gI oO 
no. 3 3. 0 behyeet nto) (apes os) 
20 a: 
Sept.21 Dros HI et) ae 2.2 oo 3 2 2 4 24 gI oO 
no. 13 BGO 5 34 | (16 24) | (89 0) 
20 Ge 20 
Sept. 21 Dr. | 764.6 + 2.5 | + 2.0 6776 tole Wnt 4 24 | 89 Oo 
no. 15 Zi xO cy ay | 
| 20 26) 21 

D. Donner. Dr)’ Dreyer. 
Le 
MEASUREMENT AND REDUCTION; PRELIMINARY CATALOGUE. 
After some trial it seemed advisable to use both vertical and horizontal 
threads in measuring the rectangular codrdinates of the star images. Thus 
both the X and Y coérdinates were determined in the same position of the 
plate. It was also decided to set upon both corners of the reseau square at 
once, thus reducing greatly the number of micrometer readings. It was not 
possible to set upon the lines as is customary, since for the most part they 
were too indistinct. Otherwise the method of measuring and recording is the 
same as that described in Publication 1, Sec. II and III. Six plates were 
measured by Dr. Furness and two by Miss Elise Whitney. The codrdinates 
of the standard stars were measured by both observers. Corrections were 
made for errors of the screw, for the reseau and forerror of runs. Table II 
which follows contains the corrected codrdinates of the two sets of images 
measured on each 89° plate. It also contains the codrdinates of certain 
stars on the go° plates which have a polar distance greater than 1° and hence 
are not included in the catalogue of sixty-five stars found in Publication 1. 
