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Updated: June 28, 2025
"As what, partner?" queried Perk, who had already begun to denude the anchored amphibian of its covering, as though it was settled they need no longer fear being spied upon from above.
Yet neither the amphibian larva nor the embryo of higher Vertebrates develops anything closely similar to a fin. There is no gradual change of a fin-like limb into a leg, but the leg develops directly from a simple bud of tissue.
The great order of Reptiles made its advent in the Permian, culminated in the Triassic and Jurassic, and began to decline in the Cretaceous. The advance from the amphibian to the reptile was a long forward step in the evolution of the vertebrates. In the reptile the vertebrate skeleton now became completely ossified. Gills were abandoned and breathing was by lungs alone.
Later they enlarge so as to attain the relative size of the cerebral hemispheres of an amphibian, and still later they are like those of a reptilian brain. Continuing to enlarge, they begin to fold so that the total surface is increased without very much addition to their bulk. At this time the cerebral hemispheres of the brain of the human embryo are like those of an adult cat or dog.
"Oh!" she protested, as he placed the small dark-red amphibian on the palm, where it crinkled up and lowered its head. "That's the idea!" he said, delighted. "Here, I'll take it now. Some day you'll be able to handle snakes if you'll only have patience." "But I don't want to."
This he managed to accomplish without much difficulty, wondering while so doing whether he and Jack might not be making history, for he suspected that never before in the annals of aviation had an amphibian plane been afforded a chance to take a prize of war in such an original fashion as bombarding the enemy crew with tear-gas bombs and causing them to flee in mad haste.
The first indication apart from certain disputed impressions in the Devonian of the land-vertebrate is the footprint of an Amphibian on an early Carboniferous mud-flat. Hardened by the sun, and then covered with a fresh deposit when it sank beneath the waters, it remains to-day to witness the arrival of the five-toed quadruped who was to rule the earth.
Perk answered his signal ere the amphibian turned a bend in the tortuous channel and saw Jack vanish from view; nor could he long detect any sound to indicate the presence of an airship since cautious Jack had again made use of that wonderful "silencer" which they had found so useful while conducting their search during the preceding night.
All ran towards the bank. The dog was already more than twenty feet off, and Cyrus was calling him back, when an enormous head emerged from the water, which did not appear to be deep in that place. Herbert recognized directly the species of amphibian to which the tapering head, with large eyes, and adorned with long silky mustaches, belonged. "A lamantin!" he cried.
A man whom fate had pitched into a canal might accomplish miracles in the way of rendering himself amphibian; he might stagger the world by the spectacle of his philosophy under amazing difficulties; people might pay sixpence a head to come and see him; but he would be less of a nincompoop if he climbed out and arranged to live definitely on the bank.
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