NEW DOUBLE STARS AND MEASURES. 103° 
In the Cape catalogue Sir John Herschel used “h” as the 
bol for himself, I have adopted the same letter for him in 
e following catalogue. R. is used for myself, and H. for Mr. 
Hi 
argra 
A diagram of the positions of p Eridani is given, and another 
showing the Sydney observations of « Centaur uri, also a number 
smaller ones showing the interesting triple or multiple. stars 
amongst those of the Cape catalogue which have been measured, 
and similar diagrams for some of the new ones. 
The value of a revolution of the screw of each of the micrometers 
; = wires ten or more revolutions and observing the transits of 
“he ae stars ; that of the 114-inch is 18 006", and that of the 
Thincl is 2 670" 
Tt has ss the custom always to make the measures with the 
star as close to the meridian as possible, and the star’s hour angle 
at the time the observations were finished has been reco’ in 
every case, and can be referred to if necessary. All the observa- 
tions prior to J uly, 1874, were made with the 71-inch, and all the 
Scot since that date which are marked H. have been made 
with the same instrument, and all — marked R. since the date 
given Sire were made with the 111- 
e date given in each of the sail is the date of the 
observation ; to many of the new stars the date of discovery is 
added. A table showing the value of the decimal date is given 
end. 
H. C. RUSSELL. 
Sy dney open 
arch, 1882, 
