XXVIl] 



BIBLIOGRAPHY 251 



507. Boodle. Ann. ofBot. xiv, p. 455. 1900. 



508. Bower. Origin of a Land Flora, p. 575- i9o8- 



509. Tansley. Lectures on the Filicinean Vase, Syst. New Phyt. Reprint, p. 27. i< 



510. Forrest Shreve. Bot. Gaz. Vol. li, p. 184. 1911. 



511. Seward. Fossil Plants. Vol. ii, p. 365. 



512. Von Goebel. Organographie. ll Teil. Heft 2. 1918. 



513. Scott. Studies in Fossil Botany. 3rd Edn. Part i. 1920. 



514. Christensen. Index Filicum. pp. xiii-xvi. 1906. 



civ KiDSTON. Fossil Plants of the Carboniferous Rocks. Part iv, p. 279. 1923. 



