San Francisco : Architect and Engineer, Inc · leaf 41
7. — Workings of the grounddwelling termites. All show the earthyfrass characteristic of the subterran-ean termites. The tendency to selectthe soft portion of the annual rings isshown in b in coarse grained wood,and in c in close grained wood. Inboth cases the work was wholly in-ternal, without… … Fig. 28—This sketch combines the sorts of conditions found to prevail in manylocaHties where wood has been improperly used. Unprotected wood in or onthe ground makes possible both settlement and rapid increase of the subter-ranean termites. Workings in stumps, poles, posts, sidewalks, and wood…
Architecture · Building
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from How to plan, finance and build your home [by] the Architects’ small house service bureau. (1922)](https://img.insideoutlibrary.com/img/200/ia-howtoplanfinance00arch-102-261.webp)
