Cipher and character, [391]; a one-line cipher, [391]; the same refined, [392]; reduced to a point, [393]; varied significally to all the 24 letters, [394]; key to the Marquis’s cipher discovered, [552].
Claudius, of Rome, his Bucket fountain, [416].
Coach-saving Engine, [414], [415].
Conceited tinder-box, [439].
Condensation applied to ebbing and flowing, [419]–[421]; applied to drawing weights, [423]–[425]; applied to draught, [427], [428]; applied to two globes, [456]–[462]; noticed by J. Bate, [480].
Continually going watch, [508].
Conveyance, a secret comb, [511]; knife, spoon, or fork, [511]
Crock, [466]; Arquebuse à, [466].
Cross-bow, noticed, [474]; a double, [528].
D.