San Francisco : Architect and Engineer, Inc · leaf 334
s develop. The supplementary pairtake over the reproductive work of thecolony. This adaptation to colonial lifehas the advantage of specialization of itsmembers, and releases the maximum num- bers of individuals for the utilization of thefood supply and work of the colony. Italso theoretically… … Fig. 9—Work of a typical powder-po.st beetle, in oak flooring. Left, surface.showing adult emergence fiolc.s. Right, work of larvae cxpo.scd by remov-ing surface layer. When these typical shot holes appear on the surfaceof any article made of oak, ash, hickory, or mahogany it would be well…
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