ABSTRACT
UP in the North, when deep snow covers the earth round about the vernal equinox, circles sometimes appear with the following formation and position: the most spacious circle, spread over the horizon, is entirely white, as also are three small circles, each hanging separately from its circumference; towards the east, however, these are distinguished by their yellow colour, as if they are trying to resemble the sun; and even the body of the sun can be surrounded by a corona or halo of rainbow hues, and has reddish likenesses of itself attached on either side. From these likenesses, or if you wish, from these two suns, two semicircles, 39like bows, rise to intersect each other; eventually, after expanding as haloes do, they vanish. Around the navel or centre of the most spacious of these circles can be seen an inverted rainbow, which gleams in a cloud of fine vapour. Next there appears another blackish rainbow, opposite to the first in colour and position. Afterwards this bow, dusky but ever varying in colour, as is customary with the celestial arc or rainbow, extends towards the south, crossing through the most spacious of the circles.
Solar circles
Vanishing circles
