He maintains that it is the d in d-d, the reduplicate prterite of do.
Reduplicate (in stivation), valvate with the margins turned outwards, 97.
Art gives intelligible ideas of the forms of nature, mechanism attempts to reduplicate their aspects.
In the present English there is no undoubted perfect or reduplicate form.
History, like a vast whispering gallery, will reduplicate ...