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The brain and nervous system complete their growth in mass by the end of the fourth year. Recall the experiments of Gudernatsch working with tadpoles, who showed that feeding with thymus produced giant tadpoles whose metamorphosis into frogs was inhibited, while feeding thyroid produced frogs the size of flies. Differentiation occurred without the preliminary increase in mass usual.
Each found himself wondering why the leaves did not stir in the trees, why there were no nightbirds, no crickets, no croaking frogs, no sign of life save that steady, clocklike tread inside the wall. So dark was it that the wall itself was but a deeper shadow against the almost opaque blackness beyond. No night, it seemed to them, had ever been so dark, so still.
What purpose will be served by slaying the frogs! Then king Parikshit whose soul was filled with woe on account of the death of her that was dear to him, answered the chief of the frogs who had spoken to him thus, 'I will not forgive the frogs. On the other hand, I will slay them. By these wicked wretches hath my dear one been swallowed up. The frogs, therefore, always deserve to be killed by me.
There are so many enemies that few tadpoles become adult frogs; besides, the frog is a cannibal and will eat not only the larvae or eggs, but the tadpoles and young frogs as well.
But be this story authentic or not, it is certain that Galvani experimented for several years upon frogs' legs suspended upon wires and hooks, until he finally constructed his arc of two different metals, which, when arranged so that one was placed in contact with a nerve and the other with a muscle, produced violent contractions.
She was standing in a ditch, covered quite to her neck in the muddy water, and holding up her arms above her head, in an effort to protect it from the many little green frogs that were sporting about her. Aunty reached her first, and, taking the little girl by the arm, she quickly rescued her from her uncomfortable position. As soon as Rikli found herself in safety, she exclaimed reproachfully:
After the rains there may generally be procured, by those who like them, frogs, which are taken from the ditch round the walls in great numbers, and are then fat, and in good condition for eating, making a very favourite curry of some of the Europeans, their flesh being very tender.
If I said 'Frogs, they wrote for me the legend of Ono- no-Tofu, who was persuaded to become a learned celebrity by witnessing the tireless perseverance of a frog trying to leap up to a willow- branch. I subjoin a few specimens of the moral ideas which I thus evoked. This should make us remember that what is only outwardly beautiful in human society should not attract us.
The strange sound seemed to follow me in a most persistent fashion, and then would be merged into the croaking of a vast assemblage of frogs.
Outside the frogs were chattering, and a nearby owl hooted dolefully. David stood still in the center of the room, his gaze fixed on the hall door. He counted the minutes, expecting, in spite of his preparedness, to be startled when the door opened with ghostly ease to admit the lank figure of the "dip."
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