[ ] 
Several Perfons have pofitively allured us, that, in 
the Evening of the 16th Day, they perceived a cer- 
tain Stench in the Air, like that which is fometimes 
occafioned by a Fog. The fame has been taken 
notice of at other times, when fuch Phenomena have 
appeared. 
There was a very thin Fog in the Air not only on 
the 1 6th Day, but alfo on the preceding and enfuing 
Days. The Mornings of the 17th and 18th, before 
and a little after Sun-rife, the Air appeared of an 
uncommon firy Colour. The Evening of the 17th, 
the Crepufculum was of an extraordinary Height. 
Between the North and Weft, there was feen a very 
thin red Vapour, which lafted almoft till Night. 
The various Appearances of the Aurora-, obferved 
by that Gentleman, are here omitted, becaufe they 
very well agree with thofe above defcribed. 
4. Splendidiffimum lumen Bore ale Roma? <vifum die 
1 6. Decembri 1 7 3 7. Obfervante Didaco de Revillas,. 
AbbateU\ztonym.pub. Math. Prof. & Reg. Societ. 
Londinenfis, necnon Acad . Sclent . Inft. Bonon. 
Socio. 
E TSI hora dumtaxat p.m. vn. cum femilfe de 
fplendidiftimo coelum illuftrante lumine monitus 
ejus obfervationi vacare coeperim ; abs oculatis tamen, 
& fide dignis teftibus haec accepimus : nimirum, 10. 
Crepufculo vix finito humiliorem coeli borealem 
plagam rubro colore infe&am, ignitamque confpici. 
coepifle 5 nonnuilis poftmodum albicantibus ftriis inde 
2 
