If you "leave no stone unturned" in your walks through the fields, you may perchance discover the abode of one of our solitary bees. Indeed, I have often thought what a chapter of natural history might be written on "Life under a Stone," so many of our smaller creatures take refuge there,—ants, crickets, spiders, wasps, bumblebees, the solitary bee, mice, toads, snakes, and newts. What do these things do in a country where there are no stones? A stone makes a good roof, a good shield; it is water-proof and fire-proof, and, until the season becomes too rigorous, frost-proof too. The field mouse wants no better place to nest than beneath a large, flat stone, and the bumblebee is entirely satisfied if she can get possession of his old or abandoned quarters. I have even heard of a swarm of hive bees going under a stone that was elevated a little from the ground. After that, I did not marvel at Samson's bees going into the carcass or skeleton of the lion.
In the woods one day (it was November) I turned over a stone that had a very strange-looking creature under it,—a species of salamander I had never before seen, the banded salamander. It was five or six inches long, and was black and white in alternate bands. It looked like a creature of the night,—darkness dappled with moonlight,—and so it proved. I wrapped it up in some leaves and took it home in my pocket. By day it would barely move, and could not be stimulated or frightened into any activity; but an night it was alert and wide awake. Of its habits I know little, but it is a pretty and harmless creature. Under another stone was still another species, the violet-colored salamander, larger, of a dark plum-color, with two rows of bright yellow spots down its back. It evinced more activity than its fellow of the moon- bespattered garb. I have also found the little musical red newt under stones, and several small dark species.
But to return to the solitary bee. When you go a-hunting of the honey-bee, and are in quest of a specimen among the asters or goldenrod in some remote field to start a line with, you shall see how much this little native bee resembles her cousin of the social hive. There appear to be several varieties, but the one I have in mind is just the size of the honey-bee, and of the same general form and color, and its manner among the flowers is nearly the same. On close inspection, its color proves to be lighter, while the under side of its abdomen is of a rich bronze. The body is also flatter and less tapering, and the curve inclines upward, rather than downward. You perceive it would be the easiest thing in the world for the bee to sting an enemy perched upon its back. One variety, with a bright buff abdomen, is called "sweat-bee" by the laborers in the field, because it alights upon their hands and bare arms when they are sweaty,—doubtless in quest of salt. It builds its nest in little cavities in rails and posts. But the one with the bronze or copper bottom builds under a stone. I discovered its nest one day in this wise: I was lying on the ground in a field, watching a line of honey-bees to the woods, when my attention was arrested by one of these native bees flying about me in a curious, inquiring way. When it returned the third time, I said, "That bee wants something of me," which proved to be the case, for I was lying upon the entrance to its nest. On my getting up, it alighted and crawled quickly home. I turned over the stone, which was less than a foot across, when the nest was partially exposed. It consisted of four cells, built in succession in a little tunnel that had been excavated in the ground. The cells, which were about three quarters of an inch long and half as far through, were made of sections cut from the leaf of the maple,— cut with the mandibles of the bee, which work precisely like shears. I have seen the bee at work cutting out these pieces. She moves through the leaf like the hand of the tailor through a piece of cloth. When the pattern is detached, she rolls it up, and, embracing it with her legs, flies home with it, often appearing to have a bundle disproportionately large. Each cell is made up of a dozen or more pieces: the larger ones, those that form its walls, like the walls of a paper bag, are oblong, and are turned down at one end, so as to form the bottom; not one thickness of leaf merely, but three or four thicknesses, each fragment of leaf lapping over another. When the cell is completed, it is filled about two thirds full of bee-bread,—the color of that in the comb in the hive, but not so dry, and having a sourish smell. Upon this the egg is laid, and upon this the young feed when hatched. Is the paper bag now tied up? No, it is headed up; circular bits of leaves are nicely fitted into it to the number of six or seven. They are cut without pattern or compass, and yet they are all alike, and all exactly fit. Indeed, the construction of this cell or receptacle shows great ingenuity and skill. The bee is, of course, unable to manage a single section of a leaf large enough, when rolled up, to form it, and so is obliged to construct it of smaller pieces, such as she can carry, lapping them one over another.
A few days later I saw a smaller species carrying fragments of a yellow autumn leaf under a stone in a cornfield. On examining the place about sundown to see if the bee lodged there, I found her snugly ensconced in a little rude cell that adhered to the under side of the stone. There was no pollen in it, and I half suspected it was merely a berth in which to pass the night.
These bees do not live even in pairs, but absolutely alone. They have large baskets on their legs in which to carry pollen, an article they are very industrious in collecting.
Why the larger species above described should have waited till October to build its nest is a mystery to me. Perhaps this was the second brood of the season, or can it be that the young were not to hatch till the following spring?
THE WEATHERWISE MUSKRAT
I am more than half persuaded that the muskrat is a wise little animal, and that on the subject of the weather, especially, he possesses some secret that I should be glad to know. In the fall of 1878 I noticed that he built unusually high and massive nests. I noticed them in several different localities. In a shallow, sluggish pond by the roadside, which I used to pass daily in my walk, two nests were in process of construction throughout the month of November. The builders worked only at night, and I could see each day that the work had visibly advanced. When there was a slight skim of ice over the pond, this was broken up about the nests, with trails through it in different directions where the material had been brought. The houses were placed a little to one side of the main channel, and were constructed entirely of a species of coarse wild grass that grew all about. So far as I could see, from first to last they were solid masses of grass, as if the interior cavity or nest was to be excavated afterward, as doubtless it was. As they emerged from the pond they gradually assumed the shape of a miniature mountain, very bold and steep on the south side, and running down a long, gentle grade to the surface of the water on the north. One could see that the little architect hauled all his material up this easy slope, and thrust it out boldly around the other side. Every mouthful was distinctly defined. After they were two feet or more above the water, I expected each day to see that the finishing stroke had been given and the work brought to a close. But higher yet, said the builder. December drew near, the cold became threatening, and I was apprehensive that winter would suddenly shut down upon those unfinished nests. But the wise rats knew better than I did; they had received private advices from headquarters, that I knew not of. Finally, about the 6th of December, the nests assumed completion; the northern incline was absorbed or carried up, and each structure became a strong, massive cone, three or four feet high, the largest nest of the kind I had ever seen. Does it mean a severe winter? I inquired. An old farmer said it meant "high water," and he was right once, at least, for in a few days afterward we had the heaviest rainfall known in this section for half a century. The creeks rose to an almost unprecedented height. The sluggish pond became a seething, turbulent water-course; gradually the angry element crept up the sides of these lake dwellings, till, when the rain ceased, about four o'clock, they showed above the flood no larger than a man's hat. During the night the channel shifted till the main current swept over them, and next day not a vestige of the nests was to be seen; they had gone downstream, as had many other dwellings of a less temporary character. The rats had built wisely, and would have been perfectly secure against any ordinary high water, but who can foresee a flood? The oldest traditions of their race did not run back to the time of such a visitation.
Nearly a week afterward another dwelling was begun, well away from the treacherous channel, but the architects did not work at it with much heart: the material was very scarce, the ice hindered; and before the basement story was fairly finished, Winter had the pond under his lock and key.
In other localities I noticed that, where the nests were placed on the banks of streams, they were made secure against the floods by being built amid a small clump of bushes. When the fall of 1879 came, the muskrats were very tardy about beginning their house, laying the corner-stone—or the corner-sod—about December 1, and continuing the work slowly and indifferently. On the 15th of the month the nest was not yet finished. This, I said, indicates a mild winter; and, sure enough, the season was one of the mildest known for many years. The rats had little use for their house.