55G REPORTS OF AMERICAN OBSERVATORIES. 



Longitude from Washington, 38 ,n , 5G 8 . 

 Latitude, + 36° 10' 01". 

 Authority for latitude and longitude : Mr. George Dean, United 

 States Coast Survey. 



I. Director, E. E. BARNARD. 



II. Instruments : 



(c) Equatorial instruments : Maker, John Byrne, New York ; aper- 

 ture of objective, 5 inches ; magnifying powers of eyepieces, 52, 78, 85, 104, 

 173, 200, 330, 520. This instrument has simple equatorial mounting 

 moved by hasp joint and handle (on tripod stand). 



(i) Miscellaneous : Have also a small achromatic telescope with object- 

 ive 2\ inches in diameter, simple vertical and horizontal mounting. I use 

 a good silver watch and get my time from Western Union Telegraph 

 office by noon signal from Washington. 



(c) (e 1 ) Jupiter, changes in belts, etc. 



IV. Work proposed for the coming year (18S0) : 

 I propose to use what time I can spare observing further the changes 

 on Jupiter; and particularly the lunar crater Plato. Also other objects 

 which come under my notice and time. 



VI. Additional information: 

 The spare time from my work has been very little, and most of that 

 has been occupied in the study of mathematics. What little time I have 

 had for observing has been employed in the observation of the lunar 

 crater Plato and the changes on the surface of the planet Jupiter ; mak- 

 ing drawings of his belts, etc. Since last season a large oblong red spot 

 or short belt, rather,has appeared. I have been watching this to detect 

 any changes that may occur in it. I have made drawings at every favor- 

 able opportunity of this remarkable spot, but I have so far been un- 

 able to detect any positive change in it, but there seems to be change 

 going on in some of the belts, especially in the belt immediately above 

 the red spot and nearer the equator of the planet. This seems to be 

 changing in form and color. When I first noticed this belt it was of a 

 dusky grayish tint; then, afterwards, of a beautiful bluish color; this 

 bluish tint was quite marked. The northern of the equatorial belts is 

 very ruddy, but heretofore has been not near so red as the large red spot, 

 but on the night of the 14th of September it seemed to be fully as ruddy 

 as the spot. My lack of proper instrumental equipment has kept me 

 from making any very accurate observations. I would further state in 

 regard to the changes of Jupiter that on the above-mentioned night, at 

 fl h 30 m , there were one or two little round spots on the disc near the South 

 Pole; tliey appeared about the size of one of the satellites (the 3rd) 

 which had come on the disc half hour or so before; they were faint and 

 not seen readily. I had not noticed these spots before. 



