1934, Robert C. Priebschet al., chapter X, inThe German Language, volume II, page380:
The full stop or, instead, avirgula, i.e. a short slanting strike (/) is used... to mark the end of a sentence or of a portion of a sentence followed by a pause.
“virgula”, inCharlton T. Lewis (1891)An Elementary Latin Dictionary, New York: Harper & Brothers
"virgula", in Charles du Fresne du Cange’sGlossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)