REPORTS OF AMERICAN OBSERVATORIES. 541 



Location of observatory : (City) Brooklyn j (County) King's; (State) 

 New York. 



I. Personnel: 

 Director, G. P. Serviss. 



II. Instruments : 



(c) Equatorial instrument* : One telescope; maker, John Byrne, of 

 New York; aperture of objective, 3| inches; magnifying powers of eye- 

 pieces, 50, 10G, 1G0, 250, and 320. 



(i) Miscellaneous : My telescope is mounted equatorially on a tripod 

 stand. The objective is of excellent quality. I can see the companion 

 of a Lyra 1 and both the debilissima in Epsilon Lyrce with ease. It also 

 easily separates double stars only l."5 apart. Under favorable circum- 

 stances I have seen five of Saturn's moons. I have no observatory, and 

 my observations are made from lofty windows having a southerly and 

 westerly exposure, and occasionally from the roof of my residence on 

 Brooklyn Heights. In observing Jupiter and Saturn I ordinarily employ 

 powers of 1G0 and 250, and occasionally 320. For special purposes I 

 have used a power of 480 with good effect. 



III. Observations during the past year: 

 From June, 1878, to September, 1879. 



I have devoted most of the time spent with my telescope to viewing 

 the moon and the planets, especially Jupiter and Saturn. I have made 

 drawings of the surface of Jupiter at different times, noting every 

 change in the belts and spots as accurately as possible. In August of 

 this year (1879) and thus far in September I have made careful draw- 

 ings of the disk of Jupiter and have colored them, seeking to give as 

 near the exact tint as possible to the spots, belts, and shaded regions. 

 The general result of my recent work shows that the northern dark belt 

 is of a coppery hue, verging on a reddish-purple, while the southern 

 belt is gray. The contrast in the color of these two belts has often 

 appeared to me very strikingly. Their outlines are at times broken, and 

 the copper belt is frequently seen split lengthwise. White and dark 

 spots on the central light zone I have observed frequently. 



IV. Work proposed for the coming year (1879-80) : 



I intend to continue my observations and drawings of Jupiter and 

 other planets. I am especially interested in watching a remarkable 

 elongated spot of a light maroon color (with a trace of rose tint) that 

 lies south of the gray belt, and is about one-fourth of the planet's diam- 

 eter in length, one-eighth of its own length broad, and somewhat 

 rounded at the ends. The gray bell opposite this spot seems to grow 

 narrower and bend away from, the spot toward the center of the disk. 

 All of my drawings show light and dark markings on the central white 

 zone about in the longitude of this great spot. 



