And when the Salmon seeks a fresher stream to find; (Which hither from the sea comes, yearly, by his kind,) As he towards season grows; and stems the watry tract Where Tivy, falling down, makes an high cataract, Forc'd by the rising rocks that there her course oppose, As tho' within her bounds they meant her to inclose; Here when the labouring fish does at the foot arrive, And finds that by his strength he does but vainly strive; His tail takes in his mouth, and, bending like a bow That's to full compass drawn, aloft himself doth throw, Then springing at his height, as doth a little wand That bended end to end, and started from man's hand, Far off itself doth cast, so does that Salmon vault; And if, at first, he fail, his second summersault He instantly essays, and, from his nimble ring Still yerking, never leaves until himself he fling Above the opposing stream.
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