242 Canadian Record of Science. 



Note on Specimens of Fossil Wood from the 



Erian (Devonian) of New York 



and Kentucky. 



By Sir Wm. Dawson and Prof. D. P. Phnhallow. 



(Plate I.) 

 The specimens referred to in this note were sent by Prof. 

 J. M. Clarke, of Albany, to Sir "Win. Dawson, and additional 

 specimens of one of them were subsequently obtained 

 through Prof. Clarke from Mr. C. E. Beecher, of Tale Uni- 

 versity Museum. The greater number of the specimens 

 proved on examination to be of species previously described 

 by Sir W~m. Dawson, as will appear by the following notes 

 contributed by him. One of the specimens, however, he- 

 longing to the genus Kalymma of Unger, a form not pre- 

 viously recognized in America, and imperfectly known, was 

 placed in the hands of Prof. Penhallow for more detailed 

 study, and the report thereon is appended. 



Dadoxylon (Cordaioxylon) Clarkii, 1 Dawson. 



To this species belong a number of slender stems imbedded 

 in the Styliola limestone of the Genessee shale, and one 

 similar specimen from the Naples series, cohected by Prof. 

 Clarke. They present the following characters : — 



Stem about 1.5 cm. in diameter, with pith 3 rn.m. in 

 diameter, surrounded with woody tissue, but destitute of 

 bark. Woody cylinder in transverse section showing radiat- 

 ing rows of square fibres, converging into distinct wedges 

 toward the pith, which is composed of parenchyma. The 

 terminations of the wedges are about 8 in number. 



The radial section shows woody fibres, with two or three 

 rows of bordered pores and medullary rays of various 

 lengths. There are a few scalariform and reticulated vessels 

 in the points of the wedges next the pith. 



1 Report on Erian Plants of Canada, pt. 2, 1882, p. 124. Palteozoic 

 f^yranosperms, Memoirs of Peter Redpath Museum, 1890. 



