To conclude the history of bloody rain, the following is most appropriate: In 1841, some negroes, in Wilson County, Tennessee, reported that it had rained blood in the tobacco field where they had been at work; that near noon there was a rattling noise like rain or hail, and drops of blood, as they supposed, fell from a red cloud that was flying over. Prof. Troost, of Nashville, was called upon to explain the phenomenon; and, after citing many instances of red rain, red snow, and so called showers of blood, he concluded his learned article with this opinion: “A wind might have
taken up part of an animal, which was in a state of decomposition, and have brought it in contact with an electric cloud, in which it was kept in a state of partial fluidity or viscosity. In this case, the cloud which was seen by the negroes, as the state in which the materials were, is accounted for.”
Prof. Troost published this profound solution in the forty-first volume of Silliman’s Journal; but in the forty-fourth of the same magazine a much more satisfactory one is given, for it is there stated “that the whole affair was a hoax devised by the negroes, who pretended to have seen the shower for the sake of practicing on the credulity of their masters. They had scattered the decaying flesh of a dead hog over the tobacco leaves.”[767]
Another phenomenon to be particularly noticed in the history of the Butterflies, is their appearance at certain times in countless numbers migrating from place to place. H. Kapp, a writer in the Naturforsch, observed on a calm sunny day a prodigious flight of the Cabbage-Butterfly, Pontia brassicæ, which passed from northeast to southwest, and lasted two hours.[768] Kalm, the Swedish traveler, saw these last insects midway in the British Channel.[769] Lindley tells us that in Brazil, in the beginning of March, 1803, for many days successively there was an immense flight of white and yellow Butterflies, probably of the same tribe as the Pontia brassicæ. They were observed never to settle, but proceeded in a direction from northwest to southeast. No buildings seemed to stop them from steadily pursuing their course; which being to the ocean, at only a small distance, they must all have inevitably perished. It is to be remarked that at this time no other kind of Butterfly was to be seen, though the country usually abounds in such a variety.[770]
A somewhat similar migration of Butterflies was observed in Switzerland on the 8th or 10th of June, 1828. The facts are as follows: Madame de Meuron Wolff and her family, established during the summer in the district of
Grandson, Canton de Vaud, perceived with surprise an immense flight of Butterflies traversing the garden with great rapidity. They were all of the species called Belle Dame by the French, and by the English the Painted Lady (Vanessa cardui, Stephens). They were all flying close together in the same direction, from south to north, and were so little afraid when any one approached, that they turned not to the right or to the left. The flight continued for two hours without interruption, and the column was about ten or fifteen feet broad. They did not stop to alight on flowers; but flew onward, low and equally. This fact is the more singular, when it is considered that the larvæ of the Vanessa cardui are not gregarious, but are solitary from the moment they are hatched; nor are the Butterflies themselves usually found together in numbers. Professor Bonelli, of Turin, however, observed a similar flight of the same species of Butterflies in the end of March preceding their appearance at Grandson, when it may be presumed they had just emerged from the pupa state. Their flight, as at Grandson, was from south to north, and their numbers were so immense, that at night the flowers were literally covered with them. As the spring advanced, their numbers diminished; but even in June a few still continued. A similar flight of Butterflies is recorded about the end of the last century by M. Loche, in the Memoirs of the Turin Academy. During the whole season, these Butterflies, as well as their larvæ, were very abundant, and more beautiful than usual.[771]
Pallas once saw such vast flights of the orange-tipped Butterfly, Pontia cardamines, in the vicinity of Winofka, that he at first mistook them for flakes of snow.[772] At Barbados, some days previous to the hurricane in 1780, the trees and shrubs were entirely covered with a species of Butterfly of the most beautiful colors, so as to screen from the sight the branches, and even the trunks of the trees. In the afternoon before the gale came on, and when it was quite still, they all suddenly disappeared. The gale came on soon after.[773] Darwin tells us that several times, when the “Beagle”
had been some miles off the mouth of the Plata, and at other times when off the shores of Northern Patagonia, the air was filled with insects: that one evening, when the ship was about ten miles from the Bay of San Blas, vast numbers of Butterflies, in bands or flocks of countless myriads, extended as far as the eye could range. The seamen cried out “It was raining Butterflies,” and such in fact, continues Darwin, was the appearance. Several species were in this flock, but they were chiefly of a kind very similar to, but not identical with, the common English Colias edusa. Some moths and hymenopterous insects accompanied the Butterflies; and a fine beetle (Calosoma) flew on board.[774] Captain Adams mentions an extraordinary flight of small Butterflies, with spotted wings, which took place at Annamaboo, on the Guinea coast, after a tornado. The wind veered to the northward, and blew fresh from the land, with thick mist, which brought off from the shore so many of these insects, that for one hour the atmosphere was so filled with them as to represent a snow-storm driving past the vessel at a rapid rate, which was lying at anchor about two miles from the shore.[775]
Mr. Charles J. Anderson encountered, in South-western Africa, for two consecutive days, such immense myriads of lemon-colored Butterflies that the sound caused by their wings was such as to resemble “the distant murmuring of waves on the sea-shore.” They always passed in the same direction as the wind blew, and, as numbers were constantly alighting on the flowers, their appearance at such times was not unlike “the falling of leaves before a gentle autumnal breeze.”[776]
In Bermuda, October 10, 1847, the Butterfly, Terias lisa of Boisduval, suddenly appeared in great abundance, hundreds being seen in every direction. Previous to that occasion, Mr. Hurdis, the observer of this flight, had never met with this Butterfly. In the course of a few days, they had all disappeared.[777]