158 Mr. South's observations of the apparent distances 
No. DCV. continued. 
crystallisation on the exterior surface, have been so considerable, although an 
attached deal tube projects twelve inches beyond it, that I have been obliged to 
remove it very frequently ; but no trouble is too great to obtain measures, under 
circumstances so peculiarly favourable. Twenty stars have been observed, amongst 
them several of the most difficult, and some which I have never before seen double. 
Now however the dew is not confined to the parts of the telescope in the neigh- 
bourhood of the object-glass, but has attacked the wires of the micrometer ; they 
have a serrated appearance ; and I suspect begin to “ fiddle.” Prudence advises me 
to relinquish observing, lest by persevering they should become broken. Many 
nights since my abode here, the dew has been far more copious, than I ever ob- 
served it to be in England ; frequently the water has dripped off the instrument for 
several successive hours, but I never had any reason to suspect the slightest preci- 
pitation of moisture on the micrometer wires. The polar axis and object-end of 
the telescope, which in the earlier parts of the night were covered with hoar frost, 
are now coated with ice. 
Mean Result. 
Position 22° 43' np (10 Obs.); Distance 51". 022 (10 Obs.); 
Epoch 1825.01. 
No. DCVI. R. A. 9 h 47 m ; Decl. 20° 37' N. 
Struve, 353 ; Hist. Casl. 212. 
Double ; 8th and 10th magnitudes ; small, blue. 
Passy; January 2, 1825 ; Seven-feet Equatorial. 
Position = 85° 17 ' sf c Obs. I Diff. =z i° 8' } p..^. . 
Distance = 29L725 5 Obs. | Diff. = o". 3 i 2 j Dlfllcult * 
Passy ; February 5, 1825 ; Seven-feet Equatorial. 
8th and 10th magnitudes. 
Position = 84° 6' sf 
Distance = 3o''.4i7 
5 Obs. | Diff. = i° iq' ) p..^. 
5 Obs. j Diff. = 0" 529$ Dlfficult * 
Night very fine. Snow on the ground five or six inches deep. Thermometer in 
the observatory stands at 2y°.^. No dew on the object-glass.* 
Mean Result. 
Position 84° 4i / sf; Distance 30". 071 ; Epoch 1825.04. 
* To obviate the annoyance occasioned by the dew, wadding, such as is here 
employed in the manufacture of Ladies’ pelisses, was on February ist placed to a 
thickness of three-quarters of an inch, around the tube to which the micrometer is 
attached, to that of wood applied to the object-end, and to all the telescope tube 
projecting beyond the declination circle of the instrument : it has to a very consi- 
derable extent answered the purpose. Passy, October 22, 1825. 
