third the chemical labora- culating-tubes. At the end of the circulating-tubes, a steel ladder, made in any desired length. In order to tory. In the basement is a physical laboratory, store- valve casing is located, comprising two chambers, room, etc., and there is a sub-basement suitable for which… … valve-casing and back to the boiler, thereby obviating the back pressure usually caused by cutting ofiF the reinforce the loop, and to hold it in substantially hori- tories are equipped with the latest apparatus known steam at the radiator. zontal position, a vertical brace is employed, extending…
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