Again _epinyctis_ (night-pustule),[418] which Hensler also mentions but declares to be equally open to suspicion as to interpretation, would seem hardly pertinent in this connection, for the violent pain experienced at once tells against the likelihood of its being an affection of this class. Its appearance _in eminentibus partibus_ (on prominent parts, on the extremities) finds a clear explanation in the words added by _Pollux_ (loco citato, 197.) περὶ κνήμας καὶ πόδας ἐν νυκτὶ γενομένη (appearing on legs and feet during the night); while it is proved that Celsus meant to indicate nothing else by it from his words in describing φλυζάκιον (little blister), which he says occurs _raro in medio corpore, saepe in eminentibus partibus_,—rarely on the trunk, frequently on prominent parts, extremities. Still we do not for a moment wish to dispute the fact that the male genitals were at any rate among the Ancients counted as belonging to the _partes eminentes_, and as chancrous blebs do usually appear suddenly and often during the night, it is quite possible these may have been all along intended by _epinyctis_,—especially as on Hippocrates’ authority[419] creeping eruptions (ἕρπητες) arise from night-pustules (ἐκ τῶν ἐπινυκτίδων.) However _Pollux_ (loco citato, 206.) likewise again mentions the legs and feet (κνήμαις καὶ ποσίν), declaring these eruptions attack those of elderly people. From this we may conclude the epinyctis of the Ancient writers to have been very likely nothing else but that form of _impetigo_ (scabby eruption) which is vulgarly known as the _salt-flux_. _Aetius_[420] mentions _pustulae spontaneae in pudendis_ (pustules spontaneously set up on the privates), provoking _phimosis_, and describes[421] _scabies scroti_ (scab of the scrotum) with metathesis into ulceration and scaliness, after the disappearance of which very often acute _pruritus scroti_ (itch of the scrotum) is left behind. _Galen_ (XIX. p. 449.) defines _psoriasis scroti_ (itching of the scrotum) as a form of induration of the scrotum accompanied by itching, as well as in some instances by ulcers.