The Collaborative International Dictionary of English v.0.48:

Phenanthrene \Phe*nan"threne\, n. [Phenyl + antracene.] (Chem.)
   A complex hydrocarbon, C14H10, found in coal tar, and
   obtained as a white crystalline substance with a bluish
   fluorescence.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tolane \To*lane"\, n. [From Toluene.] (Chem.)
   A hydrocarbon, C14H10, related both to the acetylene and
   the aromatic series, and produced artificially as a white
   crystalline substance; -- called also diphenyl acetylene.
   [1913 Webster]