[ 136 ]| 
Avcust 26. Obferved him with the fame power, the ring 
ftill invifible. 
Aveust 27. Obferved him with a forty-inch double object- 
glafs, before he was near the meridian ; ring ftill invifible, at leaft 
with that power, viz. 61 *, which power I afcertained accurately : 
rain came on before he paffed the meridian, and the weather 
continued rainy and cloudy till the goth. 
Avcust 30. The ring was vifible, particularly on the eaft 
fide, with the forty-inch achromatic mentioned above: the fame 
alfo with the greateft power of the tranfit inftf'ument. By com- 
paring the gradual increafe (as far as I can truft to my recol- 
le@tion) I imagine that the ring became vifible fome time in 
the night of the 28th; I mean to one ufing the fame inftru- 
ments that I did. 
Ocrozer 1. The ring was juft vifible on the eaftern fide only 
with the double achromatic, and likewife with the tranfit inftru- 
ment. Storm came on and continued to the 3d, on which night 
I got an obfervation, but the ring was not vifible with the tranfit 
inftrument ; there was a heavy gale of wind. 
Mr. 
* Tt is much to be regretted that the generality of obfervers do not mention par- 
ticularly that they have afcertained the power of their telefcopes by proper experi- 
ments, particularly in obfervations of this fort. I meafured mine by two different 
methods, viz. by the breadth of the emergent pencil, and alfo by the ufual method of 
a diftant circle and near parallel lines, the latter method gave 58, the other 61; 
this I believe beft. 
