OXUCLÆ, in natural history, the name of a genus of fossils of the class of selenite, but of the columnar, not the rhomboidal, kind. Of this genus there are
Oxys only two known species: 1. A fine kind with thin
Oxyd. fibres and transverse filaments, found in the clayey
banks of the river Nen, near Peterborough in North-
amptonshire and, 2. A dull kind with thick plates
and longitudinal filaments. This is not uncommon in
Yorkshire, and is sometimes in a yellow and some-
times in a blue clay.