This experimental test should settle the question of lengthened vitality between us. There is no miracle about this matter at all, and science finds no stumbling-block in the way of a complete explication of this riddle, if, in the light of nature, there be any such riddle. We claim there is not, when we interpret nature in the light of nature's God. Let the earth, or rather its silicious and other decaying rocks, bring forth these batrachian forms. The command is imperative and not dependent upon any "seed" previously scattered or sown in the earth itself.

The father of the writer was Superintendent of the Green Mountain Turnpike Company, extending from Bellows Falls to Rutland, Vt., from 1812 to 1832, and worked every rod of that road many times over. From our earliest boyhood we accompanied him on these working trips, attended by a large force of laboring men, and our attention was early called to the characteristics of these toad-producing rocks. The rotting slates, shales, sandstones, shists, and rocks of various kinds, were often ploughed up by the road-sides, and the débris scraped into the centre of the road-beds; the heaviest ploughs of that day being used to cut through these wayside rocks, and often requiring as many as six or eight yoke of oxen to break the necessary furrow. In many of these decaying slates, shists, sandstones etc., hundreds of young toads, many of them not more than half an inch in length, were turned out at different seasons of the year, showing that they were produced independently of any parent batrachian, there being no trace of a mother toad in connection with them.

The parent toads bury themselves in the gardens and ploughed fields in the early autumn, and if they survive the severity of the winter months, may propagate their kind the second year, and probably for several years. But they require remarkably favorable conditions to continue their life for any considerable number of years in open-field propagation, while under no circumstances whatever can they make their way into these decaying rocks in order to propagate their species. The reason why such fresh specimens appear under these circumstances, and in the cavities of the rocks named, is conclusively that indicated by the prophet Isaiah, in the text quoted by us; and when Professor Agassiz was forced to admit that trout must have made their appearance in the fresh-water streams emptying into Lake Superior, instead of originating elsewhere, it is to be regretted, for the sake of science, that he did not boldly enunciate the formula of life as taught by the eagle-eyed prophet of the Bible, and not as proclaimed by the owl-eyed professors of the London University College.

What is true of the trout in these Lake Superior streams, is true of them almost everywhere, even right in the town of Cheshire, Conn., where we are inditing this preface, the 10th day of October, 1883. We recently visited the Rev. David D. Bishop, in the northeastern portion of this township, where that cultured gentleman was constructing an artificial trout-pond. It was at a season of the greatest drought known for years in that portion of the town.

The point selected for this trout-pond was at the farthest eastern source of what is known as "Honey Pot" brook in Cheshire, a famous one for trout in former years. Mr. Bishop proposed to stock his pond with the best spawn he could procure. We remarked to him that there was no need of that expense, as no stream ever produced better trout than the "Honey Pot"; and on closely examining one of the six or eight cold springs developed in his enclosure, to his surprise, not ours, we discovered several small trout, not more than six weeks old, as lively as they could well be under the blasting operations then going on there; while his children were fishing out from the rocks any number of young frogs (of the common Rana family), abounding wherever rocks and water make their appearance in similar localities. This incident was all the more remarkable for the reason that this small stream, or rather source of one, had been apparently dry for months, as had been many of the best wells in the town.

Our well, in the western part of the town, had been dug some six feet into the solid rock and an inexhaustible supply of the coldest water secured. We invited our neighbors, those living on both sides of us, as well as at some distance from us, to come and draw all the water they wanted, remarking that they might now and then draw up a small frog, originating therein, but that, by fishing him out of the pail, he would make his way to the neighboring streams not dry, and would flourish well enough as one of the Rana family. It was only to our more intelligent neighbors (such as Mr. Bishop) who had read our work on "Life," that we stopped to explain this phenomenal fact. And so of all life, wherever it appears, whether vegetable or animal. Our experiments with mosquitoes are equally conclusive. Three years ago we took two barrels of rain-water from our cistern, tightly covered; one barrel we left open to the warm sun and air, and the other we covered with the finest mosquito netting. The barrel left open was soon thronged with mosquitoes, constructing their little rafts of eggs and paving their way for the swarms of young wigglers that in the course of a week or two made their appearance in the open barrel in immense numbers. The process by which these wigglers hatch out into mosquitoes is an interesting one, and will bear the closest study, as well as scientifically pay for watching the operation. At the proper time they come to the surface of the water, undergo a palpable modification in their structure, and beautifully burgeon forth into the tormenting little insects that they are during the summer and autumn months in our Northern climate. The object of the covered barrel was to ascertain whether we could reach the conditions favorable for the development of this little pest of the Culex family, independently of the eggs of the insect itself. This required some patience and not a little care. We knew that an egg dropped through the interstices of the netting would sink to the bottom of the water and fail to germinate, as every scientist understanding the process well knows. It must be floated on the water at first, or until it reaches the point of development into a wiggler. The first step in the process of its life is as cunningly devised as the second, and the second as the third, until the full-fledged mosquito is reached.

All precautions must be taken against any mistake or error in the experiment named. But we persevered and found nature responsive to our demands. Wigglers after awhile made their appearance sparsely in the covered barrel, but the mosquitoes developed from them proved innocuous of harm, as we kept the barrel covered, and they were soon drowned in the water, not having sufficient area of flight to answer the conditions of their life. We might instance some remarkable discoveries in the vegetable world, showing conclusively that plants and trees come without seed, and we feel the more pride in this discovery because we have been assured by Prof. Othniel C. Marsh, of Yale College, a gentleman highly distinguished in his specialties, that if we would show that an oak tree came without an acorn, he would abandon Evolution and accept the exposition given by us of the Bible genesis; but we have no special ambition to make so eminent a convert from Herbert Spencer's ranks. He is a much younger man than ourself, but the great English Evolutionist or Involutionist, whichever he may ultimately decide to call himself, is about the writer's own age, and, for special reasons, he would prefer to win him to the vital side of this question, that he may act with Professor Beale in the great controversy now waging in England on this subject, and we will assure both Prof. Marsh, and his friend, Herbert Spencer, that if either of them will show that an acorn comes without an oak tree, we will abandon any position we have taken on this subject, and accept theirs, however absurdly (to our mind) it may have been taken in the past. We know that "tall oaks from little acorns grow;" but that is when man becomes the sower of seed, and knows the origin of each specific tree that is brought forth. When we talk about the squirrel, or the birds becoming the "sowers of seeds," especially the acorns, we are talking at random, and without any certain knowledge. This we say with all due deference and respect to our learned Agnostic friends, and wish they would treat their vitalistic brothers with the same becoming courtesy.

In a work which we have now in preparation for the press, to be entitled "Biodynamics; or, The Laws of Life," we shall give this "seed question" a more exhaustive inquiry than we have yet done.

Our proofs in regard to one form of life are equally applicable to any other plant, insect, or animal, and there is no greater or less mystery in the life of a blade of grass than in the cedar of Lebanon figuring so conspicuously in the historic page.

When the Nile overflowed its banks in ancient times, and caused the young frogs to swarm up as a pest upon the Egyptians, the same law of life was operative in that land, as when warm thunder-showers pelt the earth with us in the summer season, causing hundreds and thousands of these batrachians to come out of the gritty waysides, and swarm along our highways and by-ways, leading ignorant and thoughtless people to suppose that they have rained down from the sky. The simple fact is, that the earth was commanded to bring them forth, and that great mother of all vegetable and animal life is obeying the command to-day, just as she did in the beginning.