great trees The hammer-headed shark (Zygsna malleus) is a very were not only so tough as to resist splitting when a nail was on the Pacific shore. He .says: remarkable fish, and has from ancient times excited general driven into their substance, but that they had a crushing "It is a magnificent yet… … slag is so slight in amount that it smiting the branches from a fel- HAMMER-HEADED SHARK. seems to have no appreciable effect low tree which still stands upright, on the growing masses of residuum but not for long. There is a sound from blast furnaces in our iron producing localities. like a peal…
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