E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Whetstone of Witte (The)
(1556), by Robert Recorde, a treatise on algebra. The old name for algebra was the Cossic Art, and Cos Ingenii rendered into English is the Whetstone of Wit. It will be remembered that the maid told the belated traveller in the Fortunes of Nigel that her master had no other books but her young mistresss Bible . and her masters Whestone of Witte, by Robert Recorde.