The Collaborative International Dictionary of English v.0.48:

Fluorene \Flu`or*ene\, n. (Chem.)
   A colorless, crystalline hydrocarbon, C13H10 having a
   beautiful violet fluorescence; whence its name. It occurs in
   the higher boiling products of coal tar, and is obtained
   artificially.
   [1913 Webster] fluoresceine

The Collaborative International Dictionary of English v.0.48:

Sequoiene \Se*quoi"ene\, n. (Chem.)
   A hydrocarbon (C13H10) obtained in white fluorescent
   crystals, in the distillation products of the needles of the
   California "big tree" (Sequoia gigantea).
   [1913 Webster]