The Locomotive . sts Doctors, Too If an instrument recently developed by medical research workersproves to be as useful as they predict in furthering the study of cancer,we hope they wont overlook the fact that their device for measuringthe hydrogen ion concentration in the blood to the thousandth part ofa volt was antedated at least two years by a device for measuring suchconcentration in boiler water. Under certain conditions the hydrogen ion is as capable of affectingiron as it is of working changes in organic tissue. As pointed outin another article in this issue, it plays an important par
The Locomotive . sts Doctors, Too If an instrument recently developed by medical research workersproves to be as useful as they predict in furthering the study of cancer,we hope they wont overlook the fact that their device for measuringthe hydrogen ion concentration in the blood to the thousandth part ofa volt was antedated at least two years by a device for measuring suchconcentration in boiler water. Under certain conditions the hydrogen ion is as capable of affectingiron as it is of working changes in organic tissue. As pointed outin another article in this issue, it plays an important part in boilerplate corrosion. 1929. THE LOCOMOTIVE 171 Boys Escape Death in Engine Room as Wheel Bursts THE fourteen-foot flywheel of a Corliss-driven air compressorat the plant of French and Hecht, Inc., Davenport, Iowa, demol-ished the machine and caused extensive property damage whenit burst, on the evening of February 8th. Three young boys who,after bringing lunch for their father, the fireman, Hngered a moment. in the engine room to gaze in awe at the powerful engine, were theonly persons in the room when the wheel let go. That they escapedwith their lives was almost a miracle. One piece of the wheel, weighing about 800 pounds, passed throughthe wall of the engine room, tore out two girders in the main factorybuilding, and went on out through the roof to find a resting place inthe coal pile of a neighboring plant 600 feet away. Another pieceapparently went almost straight up in the air, for it came down verti-cally through the roof of the foundry and buried itself three feetdeep in the dirt floor. A smaller piece dropped into the pattern vaultand crushed a storage rack. Four other pieces, the largest weighing close to 400 pounds, were 172 THE LOCOMOTIVE April. hurled about 250 feet through the roof of the Safety Grinding andMachine Company plant, one of the pieces carrying away the top ofa kiln. The engine itself, which was about 30 years old, was damaged sobadly that repair
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