When Marcus succeeded to the throne in 161, the letters begin again, with slightly increased formality on Fronto's part, and they go on for some four years, when Fronto, who has been continually complaining of ill-health, appears to have died. One letter of the later period gives some interesting particulars of the emperor's public life, which are worth quoting. Fronto speaks of Marcus's victories and eloquence in the usual strain of high praise, and then continues.[38]