A highly curious, if not the strangest, order of the class are these flying creatures called bats. It is evident from Noel Paton's fairy pictures that he has closely studied their often fantastic faces. The writer could commend to his attention an African bat, lately figured by his friend Mr Murray.[23] Its enormous head, or rather muzzle, compared with its other parts, gives it an outrageously hideous look. In the late excellent Dr Horsfield's work on the animals of Java, there are some engravings of bats by Mr Taylor, who acquired among engravers the title of "Bat Taylor," so wonderfully has he rendered the exquisite pileage or fur of these creatures. It is wonderful how numerous the researches of naturalists, such as Mr Tomes, of Welford, near Stratford, have shown the order Cheiroptera to be in genera and species. Their profiles and full faces, even in outline, are often most bizarre and strange. Their interfemoral membranes, we may add, are actual "unreticulated" nets, with which they catch and detain flies as they skim through the air. They pick these out of this bag with their mouths, and "make no bones" of any prey, so sharp and pointed are their pretty insectivorous teeth. Their flying membranes, stretched on the elongated finger-bones of their fore-legs, are wonderful adaptations of Divine wisdom, a capital subject for the natural theologian to select.
Our poet-laureate must be a close observer of natural history. In his "In Memoriam," xciv., he distinctly alludes to some very curious West African bats first described by the late amiable Edward T. Bennett, long the much-valued secretary of the Zoological Society. These bats are closely related to the fox bats, and form a genus which is named, from their shoulder and breast appendages, Epomophorus:—
"Bats went round in fragrant skies,
And wheel'd or lit the filmy shapes
That haunt the dusk, with ermine capes,
And woolly breasts and beaded eyes."
The species Mr Bennett named E. Whitei, after the good Rev. Gilbert White, that well-known worthy who wrote "The Natural History of Selborne," wherein are many notices of bats.
Captain Cook's Sailor and His Description of a Fox-Bat.
It is curious, now that Australia is almost as civilised, and in parts nearly as populous, as much of Europe, to read "Lieutenant Cook's Voyage Round the World," in vol. iii. of Hawkesworth's quartos, detailing the discoveries of June, July, and August 1770—that is close upon a century ago. What progress has the world made since that period! We do not require long periods of ages to alter, to adapt, to develop the customs and knowledge of man. At p. 156 we get an account of a large bat. On the 23d June 1770 Cook says:—"This day almost everybody had seen the animal which the pigeon-shooters had brought an account of the day before; and one of the seamen, who had been rambling in the woods, told us, at his return, that he verily believed he had seen the devil. We naturally inquired in what form he had appeared, and his answer was in so singular a style that I shall set down his own words. 'He was,' says John, 'as large as a one-gallon keg, and very like it; he had horns and wings, yet he crept so slowly through the grass, that if I had not been afeared I might have touched him.' This formidable apparition we afterwards discovered to have been a bat, and the bats here must be acknowledged to have a frightful appearance, for they are nearly black, and full as large as a partridge; they have indeed no horns, but the fancy of a man who thought he saw the devil might easily supply that defect."
Having seen some of the very curious fox-bats alive, and given some condensed information about them in Dr Hamilton's series of volumes called "Excelsior," the writer may extract the account, with some slight additions, especially as the article is illustrated with a truly admirable figure of a fox-bat, from a living specimen by Mr Wolf. In Sir Emerson Tennent's "Sketches of the Natural History of Ceylon," p. 14, Mr Wolf has represented a whole colony of the "flying-foxes," as they are called.
Fox-Bats (Pteropus).
In this country that bat is deemed a large one whose wings, when measured from tip to tip, exceed twelve inches, or whose body is above that of a small mouse in bulk. In some parts of the world, however, there are members of this well-marked family, the wings of which, when stretched and measured from one extremity to the other, are five feet and upwards in extent, and their bodies large in proportion. These are the fox-bats, a pair of which were lately procured for the Zoological Gardens. It is from one of this pair that the very characteristic figure of Mr Wolf has been derived.[24] There is something very odd in the appearance of such an animal, suspended as it is during the day head downwards, in a position the very sight of which suggests to the looker-on ideas of nightmare and apoplexy. As the head peers out from the membrane, contracted about the body and investing it as in a bag, and the strange creature chews a piece of apple presented by its keeper, the least curious observer must be struck with the peculiarity of the position, and cannot fail to admire the velvety softness and great elasticity of the membrane which forms its wings. It must have been from an exaggerated account of the fox-bats of the Eastern Islands that the ancients derived their ideas of the dreaded Harpies, those fabulous winged monsters sent out by the relentless Juno, and whose names are synonymous with rapine and cruelty.
Some of these bats, before they were thoroughly known, frightened British sailors not a little when they met with them. We have given an anecdote, illustrative of this, in a preceding page.
Dr Forster, who accompanied Captain Cook on the voyage round the world from 1772 to 1775, observed fox-bats at the Friendly Islands, where they were seen in large groups of hundreds. Our traveller even notices that some of them flew about the whole day, doubtless from being disturbed by the wandering crews of the British discovery ships. He saw a Casuarina tree of large size, the branches of which were festooned with at least five hundred of these pendent Cheiroptera in various attitudes of ease, according to the habits and notions of the bat tribes, who can hang either by the hind or by the fore-feet. He noticed that they skimmed over the water with wonderful facility, and he saw one in the act of swimming, though he cannot say that it did so with either ease or expertness; they are known, however, to frequent the water in order to wash themselves from any impurities on their fur and wings, as well as to get rid of the vermin which may be infesting them.
Captain Lort Stokes found the red-necked species to be very abundant, during his survey of the north coast of Australia in H.M.S. Beagle. As the boats were engaged in the survey, flights of these bats kept hovering over them, uttering a disagreeable screeching noise and filling the air with a faint mildewy odour, far from agreeable to the smell. The sailors gave these bats the name of "monkey-birds," without being aware that naturalists in their system consider them as following closely the order which contains these four-handed lovers of trees. Captain Stokes observes that the leathern wings have a singular heavy flap, and that a flight of bats would suddenly alight on a bamboo and bend it to the ground with their weight. Each individual struggles on alighting to settle on the same spot, and like rooks or men in similar circumstances, they do not succeed in fixing themselves without making a great deal of noise. When first they clung to the bamboo, they did so by means of the claw on the outer edge of the flying membrane, and then they gradually settled.
Among the wild and varied scenery of those groups of islands called the Friendly Islands, the Feejees, and the Navigators, species of fox-bat form one of the characteristics of the place to the observant eye; while, if the traveller should happen to be blind, their presence among the otherwise fragrant forests would be readily perceived from the strong odour which taints the atmosphere, and which, says the Naturalist of the United States Exploring Expedition, "will always be remembered by persons who have visited the regions inhabited by these animals." Mr Titian Peale mentions that a specimen of the fox-bat was kept in Philadelphia for several years; and like most creatures, winged as well as wingless, was amiable to those persons who were constantly near it, while it showed clearly and unmistakably its dislike to strangers.
On its voyage, this strange passenger was fed on boiled rice, sweetened with sugar; while at the Museum, it was solaced and fed during its captivity chiefly on fruit, and now and then appeared to enjoy the picking from the bones of a boiled fowl. The fox-bat is but seldom brought alive to this country. The late Mr Cross of the Surrey Zoological Gardens kept one for a short time, and deemed it one of his greatest rarities; and, till the arrival lately of the pair alluded to at the Gardens in the Regent's Park, we have not heard of other specimens having been exhibited in this country. They are difficult to keep, and seem to feel very sensibly the changes of our climate, while it is a hard thing to get for them the food on which they live when in a state of liberty.
Mr Macgillivray discovered a new species of fox-bat on Fitzroy Island, off the coast of Australia, when he was naturalist of H.M.S. Rattlesnake.[25] He fell in with this large fruit-eating bat (Pteropus conspicillatus) on the wooded slope of a hill. They were in prodigious numbers, and presented the appearance, as they flew along in the bright sunshine, of a large flock of rooks. As they were approached, a strong musky odour became apparent, and a loud incessant chattering was heard. He describes the branches of some of the trees as bending beneath the loads of bats which clung to them. Some of these were in a state of inactivity, sleeping or composing themselves to sleep, while many specimens scrambled along among the boughs and took to flight on being disturbed. He shot several specimens, three or four at a time, as they hung in clusters. Unless they were killed outright, they continued suspended for some time; when wounded they are difficult to handle, as they bite severely, and at such times their cry resembles somewhat the squalling of a child. The flesh of these bats is described to be excellent, and no wonder, when they feed on the sweetest fruits; the natives regard it as nutritious food, and travellers in Australia, like the adventurous Leichhardt on his journey to Port Essington, sometimes are furnished with a welcome meal from the fruit-eating fox-bats which fall in their way. Even the polished French, in the Isle of Bourbon, as they used to call the Mauritius, sometimes stewed a Pteropus, in their bouillon or broth to give it a relish.
Travellers observe that in a state of nature the fox-bats only eat the ripest and the best fruit, and in their search for it they climb with great facility along the under side of the branches. In Java, as Dr Horsfield observes, these creatures, from their numbers and fruit-eating propensities, occasion incalculable mischief, as they attack every kind that grows there, from the cocoa-nut to the rarer and more delicate productions, which are cultivated with care in the gardens of princes and persons of rank. The doctor observes, that "delicate fruits, as they approach to maturity, are ingeniously secured by means of a loose net or basket, skilfully constructed of split bamboo. Without this precaution little valuable fruit would escape the ravages of the kalong."
We have mentioned that the fox-bats are occasionally eaten in Australia. Colonel Sykes alludes to the native Portuguese in Western India eating the flesh of another species of Pteropus; and it would seem that but for prejudice, their flesh, like that of the young of the South American monkeys, is extremely delicate; the colonel says, writing of the Pteropus medius, a species found in India, "I can personally testify that their flesh is delicate and without disagreeable flavour."
The Javanese fox-bat occasionally affords amusement to the colonists as well as natives, who chase it, according to Dr Horsfield, "during the moonlight nights, which, in the latitude of Java, are uncommonly serene. He is watched in his descent to the fruit-trees, and a discharge of small shot readily brings him to the ground. By this means I frequently obtained four or five individuals in the course of an hour." The natives of New Caledonia, according to Dr Forster, use the hair of these great bats in ropes, and in the tassels to their clubs, while they interweave the hair among the threads of the Cyperus squarrosus, a grassy-looking plant which they employ for that purpose.
William Dampier,[26] in 1687, observed the habits of a fox-bat on one of the Philippine Islands, though he has exaggerated its size when he judged "that the wings stretched out in length, could not be less asunder than seven or eight foot from tip to tip." He records that "in the evening, as soon as the sun was set, these creatures would begin to take their flight from this island in swarms like bees, directing their flight over to the main island. Thus we should see them rising up from the island till night hindered our sight; and in the morning, as soon as it was light, we should see them returning again like a cloud to the small island till sunrising. This course they kept constantly while we lay here, affording us every morning and evening an hour's diversion in gazing at them and talking about them." Dr Horsfield describes the species, which is abundant in the lower parts of Java, as having the same habit. During the day it retreats to the branches of a tree of the genus Ficus, where it passes the greater portion of the day in sleep, "hanging motionless, ranged in succession, and often in close contact, they have little resemblance to living beings, and by a person not accustomed to their economy, are readily mistaken for a part of the tree, or for a fruit of uncommon size suspended from its branches." The doctor describes their society as being generally silent during the day, except when a contention arises among them to get out of the influence of the sun, when they utter a sharp piercing shriek. Their claws are so sharp, and their attachment is consequently so strong, that they cannot readily leave their hold without the assistance of their wings, and if shot when in this position, they remain suspended.
Dr Mayerne and His Balsam of Bats.
Dr Mayerne, a learned English physician, who died, aged eighty-two, in 1655, showed by his prescriptions that his enlightenment was not more than that of the prevailing ignorance of the period. The chief ingredient in his gout-powder was "raspings of a human skull unburied;" "but," writes Mr Jeaffreson,[27] "his sweetest compound was his 'balsam of bats,' strongly recommended as an unguent for hypochondriacal persons, into which entered adders, bats, sucking whelps, earth-worms, hogs' grease, the marrow of a stag, and the thigh-bone of an ox."
No doubt the doctor imagined that a combination of the virulence, flightiness, swiftness, strength, and other qualities of all these animals would in some mysterious way be communicated to his melancholy patient; and, indeed, by acting on the imagination of such persons a favourable direction is given to their thoughts, and in this way their severe malady may at times have been removed.
