C. H. F. Peters—New Planetoid, ete. 421 
Art. XLIV.—Discovery of a new Planetoid, Pete observations on 
Hartwig’s Comet; by Professor C. H. F. ERS. Communi- 
cation to the editors, dated Litchfield ObesHvata of Hamil- 
ton College, Clinton, N. Y., October 18, 1880. 
A BRIGHT planetoid was discovered on Oct. 10, se the fol- 
lowing positions have been obtained : 
o. of 
1880. Ham. Coll. m.t. App. @ (219). App. 4 (219). Log. (p" A). wy 
Oct. 10. 14h 18m 128 ¥ 27 928 49° 6746"4 0°5530°705 10 
Oct. 11. 13 19 58 26 2786 +8 52 196  0°3420699 10 
The position of ae 11 depends upon that of Dm. + 8°-252, 
a star of 8"-8, but of which no accurate determination is found. 
It has been aoe for 1880-0 
a=1 29" 45°0-+¢ o=+8° 48' 20" +e’, 
80 that the Hichedl codrdinates will receive corresponding cor- 
rections, when the star’s place has been better determined. 
e magnitude of the planet was estimated at 9"-3, and its 
relatively great nearness to the earth is, rite fe concluded 
a met great apparent motion, wikininsins to 43° and 15’ 14” 
in 24 h 
I ap ui such of my observations on the Comet Hartwig, as 
far as the comparison stars have been deter oon ned. 
of 
1880. H. C. m. o. é Log. (p."A) Coane Comp. star. 
h m a ° ' " 
Oct. 3. 7 18 29 5 21 12: 46 +2715 49°3 0°8420645 6 Wo. 15654 
“8. 910-45 16:56 26°34 +2711 54°7 0°862 0°767 5 =a Coron. 
8. 7 33 23 16 30 53°87 +22 40 57°3 0°803 0°651 10 7 ae 970 & 976 
“ 10. 8 2765 16491768 +2055 1771 08300704 7 651602 
n Weiss’s ponroene the right ascension of 16" 970 ought to 
be eee 10°. 
tober 9 hd the moon did not yet interfere, the tail 
could be followed, by a five-inch seeker, for three or four de- 
grees. The nucleus, though not aa stellar, shows a goo 
concentration for accurate pointin 
Art. XLV.—The Discovery of Oxide of Antimony in exten- 
sive lodes in an Mexico; by E. T. Cox, of Tucson, 
Arizona Territory. 
[Read before the Doon meeting of the American Association for the Advance- 
ent of Science, August 27, 1880.] 
UP to the sae time the antimony of commerce has been 
madi: ‘Shiba by the reduction of the sulphide, and though 
this ore is widely distributed over the globe, it is, asa rule, 
associated with a variety of mineral substances that obstruct 
