AND BROOKS (NO. 1), 1886, AT WINDSOR, N.S.W. 221 
band of sky along the western horizon. The observations on that 
evening at Windsor are, however, not available, as the readings 
of the equatorial circles were not sufficiently satisfactory to enable 
me to identify the star of comparison, which was a very small one. 
Notwithstanding the frequently clouded state of the sky, compari- 
sons were obtained with the e square bar-micrometer on May 31, 
June 3, 10, 11, 13, 27, 29, and July 1. The results are given at 
the close of the paper. 
Comet Brooxs (No. 1). 
his comet was discovered by Brooks os ise New York, on 
April 27th. It was detected at Windsor on July 3rd, with ‘the 
aid of a telegram from the Government pte a at Melbourne. 
It — observed with seca difficulty on July 3, 4, 11, 12, 
and 21, by means of the square bar-micrometer already described. 
The results of the Windsor suaaiiak are also given at the close 
of this paper. 
Tue Repvction or THE Star Puaces, &c. 
In the determination of the mean places of the comparison stars 
I have availed myself of every authority in my Observatory 
library. In those cases where the stars are found in Stone’s Cape 
Catalogue for 1880 the precessions have been deduced from that 
and the date of the comet observations. In a the 
precessions have been determined for the mean epoch by means of 
Peter’s elements. Proper motion has been applied to the 
place of the Fabry star (No. 10) only. In some few cases the 
comparison stars could not be identified, so that they will have to 
be observed in the meridian in order to render the comet places 
available. The reduction of the star places, and the calculation of 
the ~agamgang brat? have been effected in duplicate by different 
forms, so as to avoid both systematic and accidental errors ; and, 
I may add, that i in the whole work of saietina I have been ably 
assisted by Miss M. Arnold, a pupil teacher attached to the local 
Public school. er merits as a quick and accurate computer 
have an well tested. 
