n plant near Harrisburg, Pa. It is a striking example some disease of these organs, or a combination of them, of what is apt to take place if the water is dirty or arises, death finally ensues. holds mineral salts in solution. The deposit in this Thus does worry kill. Insidiously, like many an-… … for their dead. In November, 1893, there had been the vitality of these delicate organisms that THE CORROSION OF A BOILER TUBE. discovered sixty tombs, almost all of which were are so minute that they can only be seen placed at right angles with the seashore. The under the microscope. —…
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