Cancer causes one-tenth of all deaths among grown-ups in the U. S. Yearly from 100,000 to 125,000 people die here from this dis ease. It presents itself in four main ways: 1) epithelial, in which there is no rodlike framework; 2) scirrhous or hard, in which the framework predominates and the tumor is hard and of slow growth; 3) encephaloid or soft, in which the cellular element predominates and the tumor is soft, grows rapidly and often ulcerates; and 4) colloid, in which the cancerous structure becomes gelatinous. The last three are...

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