Ch. Clk. Chief Clerk.
Chem. Chemistry; Chemical.
Ch. Hist. Church History.
Chin. China, Chinese.
Ch.J. Chief-justice.
Chr. Christ; Christian; Christopher.
Chron. Chronicles; Chronology.
C.I. [Imperial Order of the] Crown of India (for ladies).
Cic. Cicero.
Cicestr., Cicestrensis=Of Chichester.