130 Miscellaneous Intelligence. 
would have been left to be discovered with a 43-inch object-glas 
ever perfect, if no change had perien he in its appearance since Struves 
sore of that part of the heave : 
e position and distance of ‘the small star with respect to # Hit ¢ 
culis were observed by Struve at Dorpat on one night in 1829, on two . 
nights in 1832, and on three in 1836; and also on one night at ’ Poulko- 
va with the 15-inch refractor in 1851. Yet no suspicion was recorded on 
any occasion of the companion being double. It is, therefore truly aston 
ishing that ‘Mr. Alvan Clark should have detected itsginsuspected duplic- 
ity ae an object-glass whose aperture is only a. ches! I have sue 
dinates * the faintness of the components almost forbidding the slightest 
illumination, though they bear a high power on Clark’s 8-inch object — 
glass,—about 700 suiting them best. My results are P=58°97; D= 
"B54. a I 
FS Se ee itett 7 
soampetent to deal with it. As the small star precedes da! lacie: one, me the 
coco is pro’ perly “1, and the latter, u?, if that nomenclature be a opted. 
8. This star is about as difficult as the closest of the Poulkova cata 
fairly to divide it. That it attracted Mr. Clark’s attention as a dou 
star is sufficient to prove that xa — as well as his telescope must poses z 
extraordinary power of defini a 
“9, This double star au 8 a good introduction to the small one of # 
Hercutis ; its components being brighter by about half a magnitude of 
th “eins Ahgis my i i object-glass and power 697, I have obtained, 
pwase 46+ D1" 
» et. ue very difficult wheat though decidedly peta a poe: a en 
aperture. My measures in pote gave, P=178"-10; D= 
ter a mean of two estimatio 
“12. A neat and not ver . “difficult object; it ought certainly to have 
been seen at Dorpat if it were as separate then as it is now. 6: 
pater Clark’ "h-inch object-glass gave in 1854, P==833° 78; 
“ Haddenham, Thame, July 9, 1857.” 
+e a SCIENTIFIC oe 
mistake made the se hiiee of Prof Owen’s work s 
