"Then," said the spirit, "as the tablecloth is laid, we need only to have something on it. Let each please hold a corner," he continued, taking one himself with his left hand, while he passed his right to his brow. Soon flakes as of snow began to form in the air above, and slowly descended upon the cloth; and, glancing up, the three men saw that for a considerable height this process was going on, the flakes increasing in size as they fell till they attained a length of several inches. When there was enough for them all on the table-cloth the shower ceased. Sitting down on the ground, they began to eat this manna, which had a delicious flavour and marvellous purity and freshness.
"As you doubtless have already suspected," said the spirit, "the basis of this in every case is carbon, combined with nitrogen in its solid form, and with the other gases the atmosphere here contains. You may notice that the flakes vary in colour as well as in taste, both of which are of course governed by the gas with which the carbon, also in its visible form, is combined. It is almost the same process as that performed by every plant in withdrawing carbon from the air and storing it in its trunk in the form of wood, which, as charcoal, is again almost pure carbon, only in this case the metamorphosis is far more rapid. This is perhaps the natural law that Elijah, by God's aid, invoked in the miracle of the widow's cruse, and that produced the manna that fed the Israelites in the desert; while apergy came in play in the case of the stream that Moses called from the rock in the wilderness, which followed the descendants of Abraham over the rough country through which they passed. In examining miracles with the utmost deference, as we have a right to, we see one law running through all. Even in Christ's miracle of changing the water to wine, there was a natural law, though only one has dwelt on earth who could make that change, which, from a chemist's standpoint, was peculiarly difficult on account of the required fermentation, which is the result of a developed and matured germ. Many of His miracles, however, are as far beyond my small power as heaven is above the earth. Much of the substance of the loaves and fishes with which He fed the multitude--the carbon and nitrogenous products--also came from the air, though He could have taken them from many other sources. The combination and building up of these in the ordinary way would have taken weeks or months, but was performed instantaneously by His mighty power."
"What natural laws are known to you," asked Bearwarden, "that we do not understand, or concerning the existence of which we are ignorant?"
"Most of the laws in the invisible world," said the spirit, "are the counterpart or extension of laws that appear on earth, though you as yet understand but a small part of those, many not having come to your notice. You, for instance, know that light, heat, and motion are analogous, and either of the last two can be converted into the other; but in practice you produce motion of the water molecules by the application of heat, and seldom reverse it. One of the first things we master here is the power to freeze or boil water, by checking the motion of the molecules in one case, and by increasing it, and their mutual repulsion, in the other. This is by virtue of a simple law, though in this case there is no natural manifestation of it on earth with which to compare it. While knowledge must be acquired here through study, as on earth, the new senses we receive with the awakening from death render the doing so easy, though with only the senses we had before it would have been next to impossible.
"At this moment snow is falling on the Callisto; but this you could not know by seeing, and scarcely any degree of evolution could develop your sight sufficiently, unassisted by death. With your instruments, however, you could already perceive it, notwithstanding the intervening rocks.
"Your research on earth is the best and most thorough in the history of the race; and could we but give you suggestions as to the direction in which to push it, the difference between yourselves and angels might be but little more than that between the number and intensity of the senses and the composition of the body. By the combination of natural laws you have rid yourselves of the impediment of material weight, and can roam through space like spirits, or as Columbus, by virtue of the confidence that came with the discovery of the mariner's compass, roamed upon and explored the sea. You have made a good beginning, and were not your lives so short, and their requirements so peremptory, you might visit the distant stars.
"I will show you the working of evolution. Life sleeps in minerals, dreams in plants, and wakes in you. The rock worn by frost and age crumbles to earth and soil. This enters the substance of the primordial plant, which, slowly rising; produces the animal germ. After that the way is clear, and man is evolved from protoplasm through the vertebrate and the ape. Here we have the epitome of the struggle for life in the ages past, and the analogue of the journey in the years to come. Does not the Almighty Himself make this clear where He says through his servant Isaiah, 'Behold of these stones will I raise up children'?--and the name Adam means red earth. God, having brought man so far, will not let evolution cease, and the next stage of life must be the spiritual." "Can you tell us anything," asked Ayrault, "concerning the bodies that those surviving the final judgment will receive?"
"Notwithstanding the unfolding of knowledge that has come to us here," replied the spirit, "there are still some subjects concerning which we must look for information to the inspired writers in the Bible, and every gain or discovery goes to prove their veracity. We know that there are celestial bodies and bodies terrestrial, and that the spiritual bodies we shall receive in the resurrection will have power and will be incorruptible and immortal. We also know by analogy and reason that they will be unaffected by the cold and void of space, so that their possessors can range through the universe for non-nillions and decillions of miles, that they will have marvellous capacities for enjoying what they find, and that no undertaking or journey will be too difficult, though it be to the centre of the sun. Though many of us can already visit the remote regions of space as spirits, none can as yet see God; but we know that as the sight we are to receive with our new bodies sharpens, the pure in heart will see Him, though He is still as invisible to the eyes of the most developed here as the ether of space is to yours."