The principle in question, ouabaine, forms rectangular plates, very
slender, of a nacreous appearance. It is absolutely white, inodorous, and
not appreciably bitter. It contains no nitrogen, and does not react with
coloring matters. At a boiling heat, in presence of dilute acids, it is
split up, yielding a reductive sugar. Its composition is
C_{90}H_{45}O_{12}. It is poisonous if introduced into the circulation,
but not if swallowed.--_M. Arnaud, in Comptes Rendus._
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