46 Cincinnati Society of Natural History. 



166, October, 1884, and January, 1885; Dawson's Geological 

 Histor}- of Plants; Quart. Jour. Geol. Soc, London, vol. 46, 

 1890, pp. 595-617 ; Nicholson & Lydekker's Manual of Paleon- 

 tology, vol. 2, 1889, pp. 1480-1489. 



SPECIES REGARDED AS OF INORGANIC ORIGIN. 



Aristop/ivcus ratnosuvi, Miller and Dyer. Contri. to Paleont. 

 No* 2, 1878, p. 4. 



Var. germanum, M. ik. D., Ibid. 1878, p. 4. 



Both the species and the variety were described as branch- 

 ing stems, the ramifications being sent off without any 

 definite order, and the smaller fibers inosculating like the 

 veins of a leaf. They are lioth due to the running of water 

 over a muddy bank. Mr. S. A. Miller, in the supplement to 

 his catalogue of Palaeozoic Fossils, 1883, acknowledged these 

 forms to be inorganic in origin. 



C/i/oc'p/iyrus p/nniosuni, Miller and Dyer. Contri. to Paleont. 

 No. 2, 1878, p. 3. 



BiithotrcpJiis jUciforniis, U. P. James. The Paleontologist, 



1878, p. 9. 



Described as Al^cc with a main, central stem, and with 

 minor branches jutting out at an angle on either side. Pro- 

 duced by the trickling of water over a bank of sand or mud. 

 Since recognized by the authors as of inorganic origin. 



Palceopliycus flcxiiosiis, U. P. James. The Paleontologist. 



1879, p. 18. 



Described as if made of stems flattened by pressure and 

 laid down close to or overlapping and parallel with each other. 

 Really produced by the washing of water along the shore, 

 thus arranging the mud in regular layers. Acknowledged by 

 the author to be inorganic in origin. 



Tricliophycus su/catniii. Miller and I)\er. Contri. to Paleont. 

 No. 2, 187S, p. 4. 



7\ vcnosuni, Miller. Jour. Cin. Soc Xal. Hist., vol. 2, 1S79, 

 p. 112. 



