Abstract
The rate of uptake of gaseous hydrogen cyanide by S. granarius has been measured and shown to increase linearly during exposure, even after a lethal dose has been sorbed. The sorbed fumigant can be divided into a recoverable and an irrecoverable fraction, and some of the recoverable fumigant disappears from surviving insects during the recovery period, but over 80% of it remains in their bodies for at least 4 days. Attempts to relate the disappearance of fumigant with detoxication mechanisms such as are present in mammals were unsucessful.

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