The opening of the mouth is small, and from it the echidna puts forth its long slender tongue, lubricated with a viscous secretion, by means of which it seizes the ants and other insects on which it feeds.
In order to do its job properly, an O ring must be lightly lubricated to keep it supple.
The log should be washed in fresh water when practicable, to prevent oxidization of the wheels, and be lubricated with suitable oil through a hole in the case.
By keeping the scalp lubricated, the dry, flaky conditions associated with dandruff are reduced.
To promote smoothness of action, the rubbing surfaces are lubricated.
