San Francisco : Architect and Engineer, Inc · leaf 329
g termites are of several dif-ferent types. Of these the group which isby far the most important from the eco-nomic point of view is known as the sub-terranean termites. They live in the earthand in wood in contact with the earth, andfeed upon wood placed in or on the groundand from such wood as a… … Fig. 5—Runways, tubes and towers made by subterranean tennuos underhouses. Top—Branched tubes originating from a wood spreader embedded inconcrete foundation. Wood forms had been left on the outside concrete wallof the building, which was only two and a half years old. Center—Towersof the western…
Architecture · Building
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