THE CADELLE 
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yellow-pine board 42 by 4 by 1 inch taken from a farmer's bin near 
Washington, D. C, there were estimated to be 6,160 holes through 
which larvae or adults had entered or left the board. The flooring 
' 
.. r „. .<;■-,■■_; . - ■ J 
Fig. 8. — Cadelle burrows in wood : A, Cross section of oak timber used as rafter of 
wheat granary on Maryland farm for over 100 years, showing the exposed sur- 
face honeycombed by cadelle larva? ; B, external view of board from side walls of 
granary, showing entry and exit holes of cadelle larvae and adults 
of another bin which had been in place for many years, and upon 
which wheat had been placed each year, was found so riddled as 
to be unsafe. In several old bins the writers have observed cadelle 
