406 A. Hall—Astronomical Proof of 
when the observations have been accurately made. Encke 
imself has given in the Berlin Jahrbuch for 1858 a new and 
rigorous method for such calculations. : 
But should it be found, as seems probable, that Encke’s 
Comet. q- a. & 
ncke, 0°3407 2°2181 0°8464 
Faye 1°6942 S187 0°5556 
? 
Winnecke, 0°7684 —-3.1367 _ 0°7550 
Mercury, and always remains nearer than J upiter, on the other 
hand, Faye’s comet never approaches so near the sun as does 
