RAY n.
ral fins. -- Devil ray. See Sea Devil. -- Eagle ray, any large ray of the family Myliobatidæ, or Ætobatidæ. The common European species (Myliobatis aquila) is called also whip ray, and miller. -- Electric ray, or Cramp ray, a torpedo. -- Starry ray, a common European skate (Raia radiata). -- Sting ray, any one of…
RESORCIN n.
ine substance of the phenol series, obtained by melting certain resins, as galbanum, asafetida, etc., with caustic potash. It is also produced artificially and used in making certain dyestuffs, as phthaleïn, fluoresceïn, and eosin.
RETARD n.
Retardation; delay. Retard, or Age, of the tide, the interval between the transit of the moon at which a tide originates and the appearance of the tide itself. It is found, in general, that any particular tide is not principally due to the moon's transit immediatelly proceeding, but to a transit which has occured some…
RHINOCEROS n.
ging to the genera Rhinoceros, Atelodus, and several allied genera of the family Rhinocerotidæ, of which several living, and many extinct, species are known. They are large and powerful, and usually have either one or two stout conical median horns on the snout.