A child used to be called Vopiscus,1 who, when twins had
been conceived, had been retained in the womb and born alive,
the other having perished by abortion. There are, too, some
very remarkable instances of this kind, although they are singularly rare and uncommon.
1 The commentators are not agreed respecting the origin of this name;
Dalechamps suggests, that it was originally Opiscus, from ὀπίσθιον, "because one follows close upon another."—B.
The Natural History. Pliny the Elder. John Bostock, M.D., F.R.S. H.T. Riley, Esq., B.A. London. Taylor and Francis, Red Lion Court, Fleet Street. 1855.
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