278 GREENLAND VOYAGE. 
t 
upper edge of the circle No. 4., extended about 6° 
above the horizon ; and the reflected image of the 
sun on the water was 10S° 86' distant from the 
glory. The fog only extending 8° or 10° above 
the horizon, the upper edge of the fourth corona 
-was sometimes very near the summit of the “ fog- 
bank.” The sky above being perfectly cloudless, 
the sun shone with uncommon splendour. The 
shadows of the ship’s masts, sails, and rigging, as 
well as that of the observer, were evidently im¬ 
pressed on the water, since they continued, with¬ 
out alteration, after the dispersion of the fog: but 
the coloured circles were all dependent on the fog, 
strengthening (during the height of the sun) as 
the fog became denser, and appearing more and 
more faint, as the fog became more attenuated. 
The same effects, it was observed, took place iu a 
ruffled rea, as in a calm smooth surface. It re¬ 
quired a high degree of illumination, and a very 
dense fog, to produce No. 3. Part of these phe¬ 
nomena were observed from the deck, an elevation 
not exceeding sixteen feet; but they w'ere confined 
to a faint glory, and a broad white circle, corre¬ 
sponding, in diameter, with No. 4. 
These phenomena, with some slight differences, 
were repeated on the 27th July (the same year), 
during thick fog-showers, with a fresh breeze of 
wind. During f he greater part of this day the 
