If this fever did not leave him, he must try blood-letting on himself, as though in a tertian.
I have a tertian fever, which seized me after the fete at Vaux.
He was seized with a slow fever, which changed into a tertian ague.
This is the cycle, as described by Golgi, of the tertian and quartan parasite.
Sometimes the fever simulated a quotidian, sometimes a tertian.