MOCK SUNS.

In the centre of the heavens above us, the sun began to break through the

mist, forming a clear space, which, as it grew wider by the gradual

retreat of the mist and clouds, was enclosed or surrounded by a complete

circle of hazy light, much brighter than the general aspect of the

atmosphere, but not so brilliant as the sun itself. This circle was about

half as broad as the apparent size of the sun, through which it seemed to

pass, while on each side of the sun, at about the distance of a sixth of

the circumference of the ring, which likewise traversed them, were

situated two mock suns, resembling the real sun in everything but

brightness, and on the opposite side of the circle two other mock suns

were placed, distant from each other about a third of the circuit of the

band of light, forming altogether five suns, one real and four fictitious

luminaries, through which a broad hoop of subdued light ran round an area

of slightly hazy blue sky. The centre of this area was occupied by a

small segment of a rainbow, the concave side of which was turned from the

true sun, while on its convex edge, in contact with it at its most

prominent part, was stretched a broad straight band of prismatic colours,

similar to the rainbow in all but curvature. Across the space, within the

circle of light, there was a broad stream of dusky cloud, formed of

three distinct streaks, and reaching from one of the most distant mock

suns to another opposite to it, in the shape of a low arch; but in a

little while one extremity of this bar moved away from its original

position, while the other end remained stationary, leading me to suppose

that it was merely an accidental piece of cloud.

As noon approached, or rather as the clouds dispersed, the blue hazy sky

extended beyond the ring of light, and while the day advanced, and the

heavens grew more clear, the whole meteor gradually disappeared, the

circle vanishing first, and then the imitative suns. My companions

assured me they had never before witnessed a similar exhibition during

voyages in these seas; but more learned Thebans describe them as

phenomena frequently witnessed in high latitudes, and have assigned them

the designation of parhelia. There was, during this solar panorama, a

large and complete semicircle of haze, lighter in colour than the

surrounding fog, resting on the horizon perpendicularly, like a rainbow,

but this appearance my associates informed me was familiar to their

sight.--_Tales of a Voyager in the Arctic Ocean_.

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The Mirror of Literature, Amusement, and Instruction. Volume 13, No. 364, April 4, 1829 · 第 17 / 35 题