[ 295 . ] 
a mere thread of light, Monday, April 4, though cer- 
tainly vhible then. Tuefday, April 5, the evening 
was very clear, yet no ring could I perceive with my 
feet achronj^^tic telefcope ; nor from , that time did I 
fee any thing of it (but, during part of the interval, the 
appearance of a dark belt acrofs the planet,) till Thurf- 
day, June 30, w'hen I thought I faw the preceding anfa.. 
Saturday, July 2, I am fare I faw the whole ring again, 
as a thread of light ; and as the preceding anfa^ or end 
of that thread, appeared larger than the fubfequent one, 
it probably was vhible, and not only a deception, when I 
fancied I perceived it before. In thefe obferVations it de-' 
ferves to be remarked, that the magnifymg power of 
100 feemed, from its brightnefs, to fhew the thread of 
the ring more vhibly than 150. 
Chiftehnrfi:; 
J;yui775,. 
FRANCIS WOLLASTON. 
S.f XXVIII. 0 / 
VoL. LXV. 
