The question of ancient greenstones in Africa, Scandinavia, and Canada is much discussed, for there were old volcanic lavas in many places; mixed with gneisses, schists, and granites. They were not a deep layer, but presumed to be ancient remnants of interspersed lavas among sediments. They are one more evidence that volcanic eruption goes back to the time of the most ancient rocks on continents and that its lavas were affected by metamorphism. But no continuous deep stratum of greenstones is known. At depths of fifty miles, under continents only, is the Mohorovicic change to denser rock. This is an echo surface in earthquake waves, but it is absent over the whole Pacific. It may be the top of the armor plate. Justice Holmes wrote that the Constitution of the United States was an experiment. That all law of the nation works salvation by prophecy based on experiment. The experiments were extended to the Bill of Rights and all the amendments to the Constitution. I feel that geology--in view of its extreme ignorance of submarine rocks, ores, metals, oils, spring waters, temperatures, magnetism, gravity, and gases for most of the earth--needs a bill of rights and numerous amendments to its constitution. Its salvation by prophecy needs to be based on experiments with instruments, drill rigs, and anchored laboratories in this vast area. These experiments, superficially, have been conducted by oceanographic sampling of bottom materials, by gravity pendulums operated in submarines, by cameras on sea bottoms, and collections of bottom waters, by tests of radioactivity of bottom materials, by echo sounding to determine thickness of muds, by volcanology on oceanic islands, by topographic surveying of the bottom, and by all the excellent work of the oceanographic and geologic stations and their seismographs, with some studies of marine chemistry, physics, and biology. The conclusions in this book amount to only one small prophecy based on experiments with volcanoes. But the rock under deep ocean mud is still uncollected. My volcano experiments are not influenced by any consensus of text books. I was educated on textbook opinions and found geologic science deficient in experimental measurement of the field progress of erosion, sedimentation, deformation, and eruption. I expended most of my teaching in a plea for field observatories of time measurement of these four processes. The plea has done some good, and in this century we have seen grow up the International Geophysical Union. Experiment stations have multiplied, to make geophysics and geochemistry pure quantitative sciences. But they are generally commercial and have not extended to deep boring under oceans.