Special neumes such as the oriscus, quilisma, and
liquescent neumes, indicate particular vocal treatments for these notes. This system of
Kaynak: NeumeThe plica was adopted from the
liquescent neumes (cephalicus) of chant notation, and receives its name (Latin for "fold") from its form
Kaynak: Rhythmic modedescribed as "inhuman eyes in a suppurating sea of stubby maggot-like mouths;
liquescent flesh, tumorous and gelid, floating and reforming."
Kaynak: The King in Yellowwas filled with a sort of viscous and semi-
liquescent substance, quite opaque and of a sooty color.... T he center swelled as if with
Kaynak: TsathogguaThe oriscus, quilisma, and
liquescent neumes indicate special vocal treatments, that have been largely neglected due to uncertainty as to
Kaynak: Gregorian chant