(27) Many students are doubtless familiar with the instance of the "sensitive plants" which exhibit a marked degree of sensibility to touch. Many insect-eating plants manifest an equally high degree of sensitiveness, though of course in a different direction. The leaves of the Venus' Fly Trap fold upon each other and thus capture the unfortunate insect which has been tempted into the trap by the sweet juice which appears upon the leaf as a dainty bait. The folding of the leaves follows the alarm given by the three sensitive bristles or hairs which act as feelers which sense the presence of the insects. Bits of earth, or raindrops, are recognized as "not-food" by these feelers, and no closing of leaves result from their presence on the leaves. Other plants are very sensitive to degrees of light, and they close at certain hours, the time varying according to the species of the plant. It was formerly held that this sensitiveness to light was merely a chemical response to the presence of light, but recent experiments have shown that such plants, when placed in a dark room, will continue this closing for several days, in a gradually lessening degree, thus indicating the presence of a "habit" within their consciousness, which "habit" indicates the presence of "mind" even more forcibly than does the closing itself. Certain ferns will wither if their fronds are touched too often.

(31) Professor Bieser says: "Another plant showing irritability when touched, and possessing the faculty of finding and raising water by means of a long, slender, flat stem or tube, is a variety of orchid discovered by E. A. Suverkrop, of Philadelphia, several years ago. This plant grows upon the trunks of trees hanging over swampy places along the bank of the Rio de la Plata and streams of the neighborhood. When this orchid is in want of water, the slender stem gradually unwinds until it dips into the water. Then the stem slowly coils around and winds up to discharge upon the part of the plant from which the roots spring the water which it has sucked up into its hollow space or tube within its interior. Sometimes when water is absent from directly under this plant, the stem moves first in this direction and then in another, in its search for water, and finally finding the water it performs the process above described. If this plant is touched while the stem is extended it acts much like the sensitive plant (mimosa), and the stem coils up into a spiral more rapidly than when it is lifting water." The experiments of that wizard of plant-life, Luther Burbank, give us many illustrations of the manner in which the "mind" in the plant will respond to changed environment, and to take advantage of improved conditions thereof in the direction of adapting itself thereto. No one can study the works of modern botanists, or work long among plants, without discovering for himself many facts serving to prove that there is not only Life among the plants, but also sufficient mind to serve the purposes and needs of the existence of the plant. Some scientists have thought it possible that by changing the environment of the plant sufficiently, in the direction of calling out latent possibilities of mental action, it is probable that plants may be evolved which would approach in their mental activity that of the lower forms of animal life, if not indeed exceed the latter.

(26) Not only have the roots of plants the general "sense of direction" which causes them to grow downward in spite of all attempts to prevent them, but they have also the "sense of moisture," which causes them to seek the direction of water. Many plants also turn their leaves and blossoms to the light, no matter how often they are turned in the opposite direction. Potatoes in dark cellars will often send forth their sprouts twenty or thirty feet in the direction of light which shows through a tiny crack in the wall. Likewise, plants possess the "sense of taste" to a very high degree in some cases. By means of this sense they are able to detect differences in substances, and to choose those substances which are conducive to their nutrition. They are able to distinguish between poor and rich soil, and also between different chemicals of differing nutritive values. They always move their roots in the direction of the best food supply, and also toward moisture. Not only do the roots of plants move in the direction of water, but instances have been cited in which the leaves of plants will bend over during the night and dip themselves in a vessel of water several inches away. Insect-eating plants recognize the difference between living animal substance and bits of inorganic matter or vegetable substance, casting off the latter two as if in disgust. Experiments have been made of placing a bit of cheese in the reach of such plants, when, though cheese is of course unfamiliar to them, they will seem to recognize its nitrogenous nature and will devour it as readily as they will a piece of flesh or the body of an insect.

(25) Such appears to be the history of the entire vegetable kingdom." Dr. J. C. Arthur, in his interesting work entitled "The Sagacity and Morality of Plants," says: "I have tried to show that all organisms, even to the very simplest, whether plant or animal, from the very nature of life and the struggle for its maintenance, must be endowed with conscious feeling, pleasure and pain being its simplest expression. I have been told in Java, as one walks through a tangle of sensitive plants, they will drop down in their deprecating way for yards on either side, as if suddenly aroused into life, only to be again transformed into lifeless sticks by some unseen power. * * * The physical basis of life, Protoplasm, is the same for plants as for animals. The first differentiated or modified form of this we meet is the curious animalcule called Amoeba. As we watch its movements we cannot refrain from ascribing to it some dim consciousness of the life it leads. But amoeboid structure is common even in the lowest kinds of plants, and amoeboid movements can be seen in some of its tissues. Witness also the habits and intelligent movements of the zoospores of sea-weed and many other Algae, and the locomotion of the antherozoa of mosses, ferns, etc. Not many years ago these objects were classed as animals, and nobody doubted these so-called animals behaved consciously and intelligently. * * * Nothing can be more marked than the likes and dislikes of plants. Human beings can hardly express the same feelings more decidedly. There is perhaps even a 'messmateship' among plants, which inclines species to prefer to grow in company. Hosts of common plants perform actions which, if they were done by human beings, would at once be brought into the category of right and wrong. There is hardly a virtue or a vice which has not its counterpart in the actions of the vegetable kingdom . As regards conduct in this respect, there is small difference between the lower animals and plants." One of the most elementary manifestations of consciousness , and conscious action, in plant life is what has been called "the gravity sense," or the sense by which the plant recognizes the "up and down" direction of growth. The germinating seed always sends its roots downward, no matter how the seed may be placed in the ground. This cannot be held to result merely from the action of gravitation, for the sprouts move upward and away from the centre of gravity just as truly as the roots move downward and toward it. Experiments have proven that this "sense of direction" is as much a true sense as that of any of the special senses of the lowly animal life-forms. The experiment has been tried of turning around a sprouting seed, the result being that in a day or so the roots will be again found to be turning downward and the sprouts turning upward. A French botanist, named Duhamel, once placed some beans in a cylinder filled with moist earth. After they had begun to sprout, he turned the cylinder a little to one side. The next day he turned it a little further in the same direction. Each day he would turn it a little more, until finally it had described several full circles. Then he took out the plant, and shaking off the clinging earth, he found that the beans’ roots and sprouts had described circles—two perfectly formed spirals being shown, one of the tiny roots and the other of the tiny sprouts. The roots in their constant endeavor to move downward had formed one perfect spiral, while the sprouts in the constant effort to rise upward had described another perfect spiral. No amount of effort will cause the roots of a plant to grow upward, or its sprouts to grow downward. Each, root and sprout, has its own "sense of direction" to which it faithfully and invariably responds. In the same way, and from a similar cause, the tendrils of climbing plants will faithfully move toward the nearby support, and if they are untwined they will return during the next night to the old support, if possible. Moving pictures, carefully prepared, and taken over a long period, show that the movements of these tendrils to be akin to the movements of the limbs of an animal—the feelers and graspers of the octopus for example.

(15) The ordinary student of chemistry and physics is familiar with what is called "metallic vegetation," notably in the case of the "lead tree," in which there is manifested the appearance of plant forms on the part of the acidulated solution of certain metallic substances. In the case of the "lead tree" an acidulated solution of acetate of lead is placed in a wide-necked bottle, from the cork of which bottle a piece of copper wire is suspended, at the end of which dangles a piece of zinc which hangs at the centre of the lead solution. When the bottle is corked the copper wire begins at once to be surrounded with a growth of metallic lead closely resembling a very fine moss, which moss gradually develops branches and limbs and finally foliage, in the end a miniature bush or tree being formed. Other metallic solutions produce similar phenomena. Saltpeter, subjected to the effect of polarized light, assumes forms closely resembling the orchid. Crystals of frost form on window panes the shapes of leaves, branches, foliage, blossoms, flowers, etc. Many metals tend to crystallize in the forms of vegetable growth; and this is particularly significant when it is remembered that crystals are beginning to be regarded as "almost alive" by modern science, as noted in a preceding paragraph of the present chapter.

(26) Their knowledge of our prayers is due to what we may call an enlinking, a determined relation of things fitted into a system; so, too, the fulfillment of the petitions; in the art of magic all looks to this enlinkment: prayer and its answer, magic and its success, depend upon the sympathy of enchained forces.

This seems to oblige us to accord sense-perception to the earth.

But what perception?

Why not, to begin with, that of contact-feeling, the apprehension of part by part, the apprehension of fire by the rest of the entire mass in a sensation transmitted upwards to the earth's leading principle? A corporeal mass may be sluggish but is not utterly inert. Such perceptions, of course, would not be of trifles, but of the graver movement of things.

But why even of them?

Because those gravest movements could not possibly remain unknown where there is an immanent soul.

And there is nothing against the idea that sensation in the earth exists for the sake of the human interests furthered by the earth. They would be served by means of the sympathy that has been mentioned; petitioners would be heard and their prayers met, though in a way not ours. And the earth, both in its own interest and in that of beings distinct from itself, might have the experiences of the other senses also- for example, smell and taste where, perhaps, the scent of juices or sap might enter into its care for animal life, as in the constructing or restoring of their bodily part.

But we need not demand for earth the organs by which we, ourselves, act: not even all the animals have these; some, without ears perceive sound.

For sight it would not need eyes- though if light is indispensable how can it see?

That the earth contains the principle of growth must be admitted; it is difficult not to allow in consequence that, since this vegetal principle is a member of spirit, the earth is primarily of the spiritual order; and how can we doubt that in a spirit all is lucid? This becomes all the more evident when we reflect that, besides being as a spirit lightsome, it is physically illuminated moving in the light of kosmic revolution.

There is, thus, no longer any absurdity or impossibility in the notion that the soul in the earth has vision: we must, further, consider that it is the soul of no mean body; that in fact it is a god since certainly soul must be everywhere good.

(23) Other plants, however, have a comparatively highly developed nervous system, or something corresponding to it, and manifest Neuroses, or acts pertaining to the nervous system, of a comparatively high degree. This is true of the "sensitive plants," and certain other plants of a high development in this direction. Some of the orchids, and a few other plants, manifest Neuroses indicating clearly the presence of consciousness and a degree of intelligent activity.