_Halo._--When this phenomenon is observed round the sun or moon, it shows that hail, snow, or rain, according to the season, will soon follow. Colored or double halos are still more certain indications of rain, and often of wind also. When mock suns or mock moons, bands of light, and other unusual phenomena attend halos, a peculiar condition of the atmosphere is indicated. The proper _halo_ or luminous ring, is distinguished from the _corona_ or luminous disk, which is sometimes a forerunner of rain also, but is a thing of more frequent occurrence. When halos are very red, wind almost always follows. _Headaches_ often foretell a change of weather in persons subject to such complaints. There is also some obscure change of weather near to the periods of new and full moon, which causes a certain ephemeral headache that begins usually in the morning, gets worse about two o’clock, and subsides in the evening, attended with an irritated stomach; it much resembles the ordinary bilious headache from repletion, but differs from that which follows immediately on a certain sort of indigestion. Indeed, most periodical disorders seem to be connected with some atmospheric changes. And it is very remarkable, that they should so often have their worst paroxysms and the crisis of their terms, about the time of the conjunction and the opposition of the moon. _Hogs_, when they shake the stalks of corn and spoil them, often indicate rain: also when they rub in the dust, the same or some similar phenomenon may be expected. When they run squeaking about, and throw up their heads with a peculiar jerk, windy weather is about to commence: hence the Wiltshire proverb, that “Pigs can see the wind.” _Horses_, as well as some other domestic animals, foretell the coming of rain by starting more than ordinary, and appearing in other respects restless and uneasy on the road. _Incubus_ or nightmare, though it commonly comes of a loaded stomach, will nevertheless often occur on the occasion of a change of weather in the night, which seems to produce the effect by disturbing the digestive organs. The same observation holds good with regard to those frightful and impressive dreams which some persons have in particular kinds of weather, and about the period of change. _Lamps_, from the manner in which they burn, forebode change of weather. Before rain they burn less bright, the flame snaps and crackles, and a sort of fungous excrescence grows from the wicks, which Virgil was mindful to put among his prognostics of rain and wind. _Mare’s Tails_, or cormoid curlclouds in the sky, forebode wind, and sometimes rain. _Moon._--The prognostics from the looks of the moon are various, and were known of old. When she looks fiery, or red, like the color of copper, wind is generally to be suspected; when pale, or confused with ill-defined edges, rain; when very clear and bright, fine weather.