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Paleophytology. 427 
Fic. 543.—Terminal, middle, and fertile branch of Voltzva (Schizoneura) 
heterophylla, from the Vosges. 
Fic. 544.—A fertile and barren pinna of a Fern- 
frond, Gontopteris Murreyana. 
Fic. 545.—Stem of Cycadoidea megalophylla Fic. 546.— Branch of 
(Cycadez), from Portland Isle. Presleanunt (Cycadee), 
