Illustrated Companion to the Latin Dictionary/Cassis (helmet)

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

CAS'SIS, -idis (κόρυς). A casque or helmet made of metal, as contradistinguished from GALEA, a helmet of leather (Isidor. Orig. xviii. 14. compare Tac. Germ. 6.); but this distinction is not always observed (Ov. Met. viii. 25., where both names are given to the same helmet); and as the latter is the more common name, the different kinds and forms are described and illustrated under that word.