Of the life of the Old Ones, both under the sea and after part of them migrated to land, volumes could be written. Those in shallow water had continued the fullest use of the eyes at the ends of their five main head tentacles, and had practiced the arts of sculpture and of writing in quite the usual way – the writing accomplished with a stylus on waterproof waxen surfaces. Those lower down in the ocean depths, though they used a curious phosphorescent organism to furnish light, pieced out their vision with obscure special senses operating through the prismatic cilia on their heads – senses which rendered all the Old Ones partly independent of light in emergencies. Their forms of sculpture and writing had changed curiously during the descent, embodying certain apparently chemical coating processes – probably to secure phosphorescence – which the basreliefs could not make clear to us. The beings moved in the sea partly by swimming – using the lateral crinoid arms – and partly by wriggling with the lower tier of tentacles containing the pseudofeet. Occasionally they accomplished long swoops with the auxiliary use of two or more sets of their fanlike folding wings. On land they locally used the pseudofeet, but now and then flew to great heights or over long distances with their wings. The many slender tentacles into which the crinoid arms branched were infinitely delicate, flexible, strong, and accurate in muscular-nervous coordination – ensuring the utmost skill and dexterity in all artistic and other manual operations.

The toughness of the things was almost incredible. Even the terrific pressure of the deepest sea bottoms appeared powerless to harm them. Very few seemed to die at all except by violence, and their burial places were very limited. The fact that they covered their vertically inhumed dead with five-pointed inscribed mounds set up thoughts in Danforth and me which made a fresh pause and recuperation necessary after the sculptures revealed it. The beings multiplied by means of spores – like vegetable pteridophytes, as Lake had suspected – but, owing to their prodigious toughness and longevity, and consequent lack of replacement needs, they did not encourage the large-scale development of new prothallia except when they had new regions to colonize. The young matured swiftly, and received an education evidently beyond any standard we can imagine. The prevailing intellectual and aesthetic life was highly evolved, and produced a tenaciously enduring set of customs and institutions which I shall describe more fully in my coming monograph. These varied slightly according to sea or land residence, but had the same foundations and essentials.

Though able, like vegetables, to derive nourishment from inorganic substances, they vastly preferred organic and especially animal food. They ate uncooked marine life under the sea, but cooked their viands on land. They hunted game and raised meat herds – slaughtering with sharp weapons whose odd marks on certain fossil bones our expedition had noted. They resisted all ordinary temperatures marvelously, and in their natural state could live in water down to freezing. When the great chill of the Pleistocene drew on, however – nearly a million years ago-the land dwellers had to resort to special measures, including artificial heating – until at last the deadly cold appears to have driven them back into the sea. For their prehistoric flights through cosmic space, legend said, they absorbed certain chemicals and became almost independent of eating, breathing, or heat conditions – but by the time of the great cold they had lost track of the method. In any case they could not have prolonged the artificial state indefinitely without harm.

Being nonpairing and semivegetable in structure, the Old Ones had no biological basis for the family phase of mammal life, but seemed to organize large households on the principles of comfortable space-utility and – as we deduced from the pictured occupations and diversions of co-dwellers – congenial mental association. In furnishing their homes they kept everything in the center of the huge rooms, leaving all the wall spaces free for decorative treatment. Lighting, in the case of the land inhabitants, was accomplished by a device probably electro-chemical in nature. Both on land and under water they used curious tables, chairs and couches like cylindrical frames – for they rested and slept upright with folded-down tentacles – and racks for hinged sets of dotted surfaces forming their books.

Government was evidently complex and probably socialistic, though no certainties in this regard could be deduced from the sculptures we saw. There was extensive commerce, both local and between different cities – certain small, flat counters, five-pointed and inscribed, serving as money. Probably the smaller of the various greenish soapstones found by our expedition were pieces of such currency. Though the culture was mainly urban, some agriculture and much stock raising existed. Mining and a limited amount of manufacturing were also practiced. Travel was very frequent, but permanent migration seemed relatively rare except for the vast colonizing movements by which the race expanded. For personal locomotion no external aid was used, since in land, air, and water movement alike the Old Ones seemed to possess excessively vast capacities for speed. Loads, however, were drawn by beasts of burden – Shoggoths under the sea, and a curious variety of primitive vertebrates in the later years of land existence.

These vertebrates, as well as an infinity of other life forms – animal and vegetable, marine, terrestrial, and aerial – were the products of unguided evolution acting on life cells made by the Old Ones, but escaping beyond their radius of attention. They had been suffered to develop unchecked because they had not come in conflict with the dominant beings. Bothersome forms, of course, were mechanically exterminated. It interested us to see in some of the very last and most decadent sculptures a shambling, primitive mammal, used sometimes for food and sometimes as an amusing buffoon by the land dwellers, whose vaguely simian and human foreshadowings were unmistakable. In the building of land cities the huge stone blocks of the high towers were generally lifted by vast-winged pterodactyls of a species heretofore unknown to paleontology.

The persistence with which the Old Ones survived various geologic changes and convulsions of the earth's crust was little short of miraculous. Though few or none of their first cities seem to have remained beyond the Archaean Age, there was no interruption in their civilization or in the transmission of their records. Their original place of advent to the planet was the Antarctic Ocean , and it is likely that they came not long after the matter forming the moon was wrenched from the neighboring South Pacific. According to one of the sculptured maps the whole globe was then under water, with stone cities scattered farther and farther from the antarctic as aeons passed. Another map shows a vast bulk of dry land around the south pole, where it is evident that some of the beings made experimental settlements, though their main centers were transferred to the nearest sea bottom. Later maps, which display the land mass as cracking and drifting, and sending certain detached parts northward, uphold in a striking way the theories of continental drift lately advanced by Taylor, Wegener, and Joly.

With the upheaval of new land in the South Pacific tremendous events began. Some of the marine cities were hopelessly shattered, yet that was not the worst misfortune. Another race – a land race of beings shaped like octopi and probably corresponding to fabulous prehuman spawn of Cthulhu – soon began filtering down from cosmic infinity and precipitated a –monstrous war which for a time drove the Old Ones wholly back to the sea – a colossal blow in view of the increasing land settlements. Later peace was made, and the new lands were given to the Cthulhu spawn whilst the Old Ones held the sea and the older lands. New land cities were founded – the greatest of them in the antarctic, for this region of first arrival was sacred. From then on, as before, the antarctic remained the center of the Old Ones' civilization, and all the cities built there by the Cthulhu spawn were blotted out. Then suddenly the lands of the Pacific sank again, taking with them the frightful stone city of R'lyeh and all the cosmic octopi, so that the Old Ones were again supreme on the planet except for one shadowy fear about which they did not like to speak. At a rather later age their cities dotted all the land and water areas of the globe – hence the recommendation in my coming monograph that some archaeologist make systematic borings with Pabodie's type of apparatus in certain widely separated regions.