morbilli

Diseases universal and infectious—like morphoea, serpigo, lepra, variolae et morbilli.

Variolae et morbilli arise from moist matter confined in the body and turbid, like turbid blood.

Morbilli is a mild disease, but requires protection from cold, which confines and coagulates the peccant matter.

Gilbert classifies variolae et morbilli among the universal and infectious diseases, and in the species apostemata.

But the passage quoted is of interest as using the old word mesles to mean one of the two forms of morbilli or punctilli.