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Updated: April 30, 2025
To make a machine that articulates is not so easy; but we remember Maelzel's wooden children, which said, "Pa-pa" and "Ma-ma"; and more elaborate and successful speaking machines have, we believe, been since constructed. But no man has been able to make a figure that can walk. Of all the automata imitating men or animals moving, there is not one in which the legs are the true sources of motion.
All this last page or so, you readily understand, has been my private talk with you, the Reader. The cue of the conversation which I interrupted by this digression is to be found in the words "a good motto;" from which I begin my account of the visit again. Do you receive many visitors, I mean vertebrates, not articulates? said the Master.
Both of these genera have lived on during the millions of years of geological time since their introduction, handing down from generation to generation with hardly any change to their descendants now living off our shores the characters impressed upon them at the beginning. In the Cambrian the inarticulates predominate, though the articulates grow common toward the end of the period.
The grounds comprise about ten acres, and the building contains, all told, not fewer than twenty rooms, large and small. This building was designed by a student of school problems, and is not merely a theory of the architect. Each room, and each detail, articulates with every other room in harmony with a general scheme of which the child and his interests are the prime considerations.
The inferior extremity is formed by two convex articular surfaces that are separated by a deep notch, and a third pulley-like articular surface, with which the patella or knee-cap articulates. The pair of condyles articulates with the superior extremity of the leg bone. The thigh or femoral region is heavily muscled. THE LEG is formed by three bones.
All this last page or so, you readily understand, has been my private talk with you, the Reader. The cue of the conversation which I interrupted by this digression is to be found in the words "a good motto;" from which I begin my account of the visit again. Do you receive many visitors, I mean vertebrates, not articulates? said the Master.
We have found, then, Radiates, Mollusks, and Articulates in plenty; and now what is to be said of Vertebrates in these old times, of the highest and most important division of the Animal Kingdom, that to which we ourselves belong? They were represented by Fishes alone; and the Fish chapter in the history of the early organic world is a curious, and, as it seems to me, a very significant one.
The last of these is amply represented by the four zoophyte groups, three classes of articulates, five classes of mollusks, and three vertebrate classes: mammals, reptiles, and those countless legions of fish, an infinite order of animals totaling more than 13,000 species, of which only one-tenth belong to fresh water. The sea is a vast pool of nature.
But the ants will labor ingloriously without an observer to chronicle their doings, and the archivists and annalists will pile up facts forever like so many articulates or mollusks or radiates, until the vertebrate historian comes with his generalizing ideas, his beliefs, his prejudices, his idiosyncrasies of all kinds, and brings the facts into a more or less imperfect, but still organic series of relations.
It is true that the Centipedes have a long uniform body like Worms, and the Spiders have the body divided into two regions like the Crustacea, while the body in true Insects has three distinct regions, head, chest, and hind body; but notwithstanding this difference, both the former share in the peculiar class-character that places them with the Winged Insects in a separate group, distinct from all the other Articulates.
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