The Mole-rat needs not to dig such deep tunnels as the true Moles, because its food does not lie so deep. The Moles live chiefly upon earthworms, and are obliged to procure them in the varying depths to which they burrow. But the Mole-rat lives mostly upon roots, preferring those of a bulbous nature. Now bulbous roots are, as a rule, situated near the surface of the ground, and, therefore, any animal which feeds upon them must be careful not to burrow too deeply, lest it should pass beneath them. The shallowness of the burrows is thus accounted for. Gardens are often damaged by this animal, the root-crops, such as carrots and onions, affording plenty of food without needing much exertion.
The Mole-rat does not keep itself quite so jealously secluded as does our common Mole, but occasionally will come out of the burrow and lie on the ground, enjoying the warm sunshine. Still it is not easily to be approached; for though its eyes are almost useless, the ears are so sharp, and the animal is so wary, that at the sound of a footstep it instantly seeks the protection of its burrow, where it may bid defiance to its foes.
How it obtains its food is a mystery. There seems to be absolutely no method of guiding itself to the precise spot where a bulb may be growing. It is not difficult to conjecture the method by which the Mole discovers its prey. Its sensitive ears may direct it to the spot where a worm is driving its way through the earth, and should it come upon its prey, the very touch of the worm, writhing in terror at the approach of its enemy, would be sufficient to act as a guide. I have kept several Moles, and always noticed that, though they would pass close to a worm without seeming to detect its presence, either by sight or scent, at the slightest touch they would spring round, dart on the worm, and in a moment seize it between their jaws. But with the Mole-rat the case is different. The root can utter no sound, and can make no movement, nor is it likely that the odour of the bulb should penetrate through the earth to a very great distance.
THE MOUSE
Conjectures as to the right translation of the Hebrew word Akbar—Signification of the word—The Mice which marred the land—Miracles, and their economy of power—The Field-mouse—Its destructive habits and prolific nature—The insidious nature of its attacks, and its power of escaping observation—The Hamster, and its habits—Its custom of storing up provisions for the winter—Its fertility and unsociable nature—The Jerboa, its activity and destructiveness—Jerboas and Hamsters eaten by Arabs and Syrians—Various species of Dormice and Sand-rats.
That the Mouse mentioned in the Old Testament was some species of rodent animal is tolerably clear, though it is impossible to state any particular species as being signified by the Hebrew word Akbar. The probable derivation of this name is from two words which signify "destruction of corn," and it is therefore evident that allusion is made to some animal which devours the produce of the fields, and which exists in sufficient numbers to make its voracity formidable.
Some commentators on the Old Testament translate the word Akbar as jerboa. Now, although the jerboa is common in Syria, it is not nearly so plentiful as other rodent animals, and would scarcely be selected as the means by which a terrible disaster is made to befall a whole country. The student of Scripture is well aware that, in those exceptional occurrences which are called miracles, a needless development of the wonder-working power is never employed. We are not to suppose, for example, that the clouds of locusts that devoured the harvests of the Egyptians were created for this express purpose, but that their already existing hosts were concentrated upon a limited area, instead of being spread over a large surface. Nor need we fancy that the frogs which rendered their habitations unclean, and contaminated their food, were brought into existence simply to inflict a severe punishment on the fastidious and superstitious Egyptians.
Of course, had such an exercise of creative power been needed, it would have been used, but we can all see that a needless miracle is never worked. He who would not suffer even a crumb of the miraculously multiplied bread to be wasted, is not likely to waste that power by which the miracle was wrought.
If we refer to the early history of the Israelitish nation, as told in 1 Sam. iv.—vi., we shall find that the Israelites made an unwarrantable use of the ark, by taking it into battle, and that it was captured and carried off into the country of the Philistines. Then various signs were sent to warn the captors to send the ark back to its rightful possessors. Dagon, the great fish-god, was prostrated before it, painful diseases attacked them, so that many died, and scarcely any seem to have escaped, while their harvests were ravaged by numbers of "mice that marred the land."
The question is now simple enough. If the ordinary translation is accepted, and the word Akbar rendered as Mouse, would the necessary conditions be fulfilled, i.e. would the creature be destructive, and would it exist in very great numbers? Now we shall find that both these conditions are fulfilled by the common Field-mouse (Arvicola arvalis).
This little creature is, in proportion to its size, one of the most destructive animals in the world. Let its numbers be increased from any cause whatever, and it will most effectually "mar the land." It will devour every cereal that is sown, and kill almost any sapling that is planted. It does not even wait for the corn to spring up, but will burrow beneath the surface, and dig out the seed before it has had time to sprout. In the early part of the year, it will eat the green blade as soon as it springs out of the ground, and is an adept at climbing the stalks of corn, and plundering the ripe ears in the autumn.
When stacked or laid up in barns, the harvest is by no means safe, for the Mice will penetrate into any ordinary barn, and find their way into any carelessly-built stack, from which they can scarcely be ejected. The rat itself is not so dire a foe to the farmer, as the less obtrusive, but equally mischievous Field-mouse. The ferret will drive the rats out of their holes, and if they have taken possession of a wheat-stack they can be ejected by depriving them of access to water. But the burrows of the Field-mouse are so small that a ferret cannot make its way through them, and the nightly dew that falls on the stack affords an ample supply of water.
THE FIELD-MOUSE.
"Wherefore ye shall make images of your mice that mar the land."—1 Sam. vi. 5.
When the Field-mouse is deprived of the food which it loves best, it finds a subsistence among the trees. Whenever mice can discover a newly-planted sapling, they hold great revel upon it, eating away the tender young bark as high as they can reach, and consequently destroying the tree as effectually as if it were cut down. Even when the young trees fail them, and no tender bark is to be had, the Field-mice can still exert their destructive powers. They will then betake themselves to the earth, burrow beneath its surface, and devour the young rootlets of the forest trees. All botanists know that a healthy tree is continually pushing forward fresh roots below the ground, in order to gain sufficient nourishment to supply the increasing growth above. If, therefore, these young roots are destroyed, the least harm that can happen to the tree is that its further growth is arrested; while, in many cases, the tree, which cannot repair the injuries it has received, droops gradually, and finally dies. Even in this country, the Field-mouse has proved itself a terrible enemy to the agriculturist, and has devastated considerable tracts of land.
So much for the destructive powers of the Field-mouse, and the next point to be considered is its abundance.
Nearly all