dactylology

So long as this is true, dactylology can hardly claim to be more than one of the elements of a system of instruction for the deaf.

By means of it thoughts are exchanged more quickly than by speech or writing—not to mention dactylology, which lags so far behind.

They pressed hands at parting, firmly and briefly, not for the ordinary dactylology of lovers, but in sign of the treaty of amity.