S. W. Burnham—Re-discovery of the double Sar H I. 41. 457 
ica was removed, while the mail amount of alumina re aired, 
and which was not furnished by the pyroxene, was erived 
through the slight decomposition of the feldspar, which under 
the microscope appears to have lost its transparency. 
ArT. L.—The Re-discovery of the Double Star, HI4i; by 
S. W. BurRNHAM. 
HE double star entered as No. 41 of Sir William Herschel’s 
ag 
any observer since Herschel’s discovery nearly one hundred 
years ago, Sir John Herschel, in the catalogue of his father’s 
double stars (Memoirs of the R. A. &., XXXV), { gives the approx- 
imate place for 1880 as follows : 
H. Asse 17 407 me 
Decl. =+ 73° 0°6' 
Nothing is said by Sir William Herschel of the magnitudes of 
the stars, or of the distance, further than that the pair belongs 
to his Class I. He made two measures of the position angle: 
Aug. 29th, 1782, P = 350°0° 
Mch. 7th, 1783, 354°3 
A few weeks since this pair was searched io and readily 
found with a 6-inch refractor very near the place given above. 
It was identified as Lalande 32725, and its place from that 
catalogue, reduced to 1880, is: 
Ri Asm 17°49" 16°0" 
Decl. =-+ 72° 59’ 10” t 
I made three sets of measures of the angle, a mean of the 
result giving, P=840-2°. The components are of the 8th and 
9th magnitudes, and separated about 1:2”, so that now it is not 
a difficult object even with a small aperture. A considerable 
diminution in the wigs would seem to be beyond doubt, but 
further observations are necessary to determine positively 
whether or not this fine sgl isa binary. It is about 46’ north 
of the well known double star, Y’ Draconis, and easily found 
without an equatorial mounting. 
Chicago, May, 1875. 
* This volume, March, p. 187. 
