"Dump Heaps" of the "Salamander."
The fore legs and feet of the "salamander" are worth studying. They remind one somewhat of those of the mole, but are more stoutly built, with much longer claws, and are evidently designed for harder tasks. They are controlled by powerful brachial and pectoral muscles, and, as we shall see, are not only special tools adapted to special and difficult work, but work which requires an enormous expenditure of physical force.
The engineering problems which this little troglodyte has to solve are far and away ahead of any that the New York Rapid-Transit Commission has to deal with. It is very much as though a single miner were placed over in Hoboken, a hundred feet below the surface, with instructions to tunnel under the Hudson River with no tools except his hands, without a chance of seeing daylight until he reached it on the New York side, and with the added conditions that all the excavated earth should be carried out at the eastern opening of the tunnel, and finally that he should obliterate all marks of his work and, as he retreated into his tunnel, pack the exit shaft above him so tightly and so deftly that it is impossible to trace its course!
How our little fur-coated engineer solves all these problems is as yet a mystery. We only know that he does it. He has a steam engine in his shoulders and shovels for hands, but his exact methods of using them is as yet largely a matter of conjecture. Only two plans of operation would seem to be possible. One would be for the "salamander" to first carry the excavated earth all to the rear into some portion of his already finished tunnel, and finally, when the outward exit is completed, to carry it back again and deposit it on the surface. This, of course, involves a double transfer of all the earth removed. It is more likely that the "salamander" first forces a narrow passageway along the line of his future tunnel in a way similar to that pursued by the mole. The latter animal has the advantage of working near the surface, and the earth always yields along the line of least resistance, which of course is upward. Four or five feet down there is no such line, and the amount of force required to push the ground aside must be something enormous. When the "salamander" comes to the upper air the work of excavation and enlargement begins. He then piles upon the surface all the earth that he can not use in obliterating his upward passageway. As the writer has frequently observed fresh sand mounds hundreds of feet from any others, he is inclined to believe that this is the real method pursued.
The exceeding care which the "salamander" takes to leave no opening into his subterranean home arises, no doubt, from his horror of snakes. In this respect no woman can surpass him. His antipathies to reptiles are probably the accumulated embodiment of hundreds of centuries of ancestral experience. He is aware that these hereditary enemies of his race are of a very investigating turn of mind, and put in a good deal of spare time when awake in crawling into and exploring any tempting hole they may discover. And so Mr. Geomys, like the sensible fellow that he is, not only takes good care to shut and lock his front gate every time he is compelled to go through it, but he blocks up the whole passageway and does his best to convince trespassers that it is all a mistake to suppose that there ever has been any roadway leading to his underground home.
Indeed, it is by taking advantage of this morbid antipathy to intruders and daylight that our little underground dweller is usually caught. If by skillful digging a recently formed burrow is reached, one may be reasonably certain that in from five to ten minutes Mr. "Salamander" will be on hand to see what has happened and to repair damages. A shotgun kept steadily aimed at the opening, and with a quick pull on the trigger the instant the slightest movement in the sand is seen, "fetches" him every time. Another very successful method is to place a strong trap right at the opening into his burrow. In making repairs our "salamander" is in too big a hurry to look very carefully where he steps, and so is quite likely to blunder into the trap. He is always caught, however, by one of his legs, and if left any length of time is quite apt to gnaw off the captive limb and thus make his escape. Spartan bravery or love of freedom surpassing this would be hard to find.
The food of Geomys bursarius appears to be exclusively vegetable. Native roots and root stocks, cones and bulbs, together with the root bark of various trees, are eaten by him, and sometimes in a very annoying way. Orange trees are peculiarly liable to his attacks. He gnaws through and around the tap root as near to the surface as he can without disturbing it or in any way calling attention to his work, and not infrequently he continues his depredations until every root of any size is eaten off. This, of course, means the death of the tree.
From the "salamander" point of view, however, the greatest food "bonanza" of all is a sweet-potato patch. "A 'possum up a 'simmon tree" or a "pig in clover" is not more alive to the delights and advantages of the situation. He not only eats all he can stuff, but invites his relatives and friends. Nor is this all. He has learned that in autumn sweet potatoes are liable to suddenly disappear, so he "takes time"—and the potatoes—"by the forelock," and packs them away in liberal measure in his burrow for winter use. So well understood are the ways and weaknesses of this underground marauder that any suspicious mound of earth in a sweet-potato field is the signal for an active campaign of extermination, which ends only in the intruder's flight or death.
The "side pockets" of the "salamander" have already been referred to. They are undoubtedly a great convenience to their owner in carrying food and possibly other things. The capacity of these cheek pouches is about sufficient to give room for a pigeon's egg. They are, however, quite extensile, and can readily be made to hold three or four times this amount. Indeed, the skin and underlying connective tissue are so elastic that these pockets can readily be turned inside out. It is claimed that the "salamander" employs his handlike fore feet to fill and empty these receptacles, using the right foot for the left pouch, and vice versa. A gentleman in Florida recently assured me that by a lucky thrust of a spade he once killed one of these mischievous rodents as he was in the very act of cutting off the roots of an orange tree. The cheek pouches of the culprit were filled with fragments of bark which he had gnawed off, doubtless to be stowed away in his burrow.