io6 Don ulloa’s Obfervations 
though long, paffage gave me the opportunity of ob- 
ferving at fea the eclipfe of the Sun, which was accom- 
panied by a phenomenon obferved by few aftronomers, 
and which I myfelf faw for the lirft time; to wit, the 
luminous Annulus W'hichfurrounds thedifkof the Moon: 
the following is a defcription of this appearance, one of 
the moft beautiful that can be conceived. 
The motion of the fliip prevented our obferving the 
beginning of the eclipfe, by reafon of the difficulty there 
was in keeping the Solar image and a part of that of the 
Moon within the field of the telefcope; the objedl va- 
nilhed every inftant, and it was not till after fever al fruit- 
lefs trials that I could get it again. Befides this, the arms 
grew tired of holding up the telefcope and fmoaked 
glafs, which could not be relied upon any thing from 
the neceffity there was of moving the telefcope in a con- 
trary 
table pour obferver en mer l’Eclipfe du foleil accompagnee d’un phenomene tres 
particulier que j’ai vu, pour la premiere fois et que peu d’ aftronomes, ont obferve, 
jufqu’ a prefent : c’eft l’anneau lumineux autour du difque de la lune, phenomene 
des plus frapans et des plus beau a la vue ; en void la defcription : 
Le mouvement du vaifleau ne permit pas d’obferver le commencement de 
Feclipfe, par la difficulte de conferver le corps folaire et une partie de celui de la 
Lune dans le champ de la Lunette; l’objet m’echapoit a tout moment, et je ne le 
tatrapois qu’apres bien des recherches. Outre cela, les bras fe fatiguoient a fou- 
tenir en l’air la lunette et le verre obfcur, qu’on ne pouvoit apuyer, parce qu’il 
falloit 
