with Remarks on its Construction. 
*37 
considerably condensed, showed clearly that it conveyed a 
great quantity of nebulosity to the perihelion passage. 
The comet of last year contained with little solidity a most 
abundant portion of nebulous matter, on which, in its approach 
to the perihelion, the action of the sun produced those beau- 
tiful phenomena, which have so favourably afforded an opport- 
unity for critical observations. 
MDCCCXII. 
1 1 
