62 UOYAL SOCIETY OF CANADA 



5. C. hamiltonense. 

 Ray cells about 28-37 mic. " ■•oad. 



Pits on the lateral walls of the ray cells about 1-4 per tracheid. 



6. C. illinoisensie. 

 Ray cells (tang.) oblong. 



Pits on the lateral walls of the ray cells 1-3, chiefly 2 per tracheid. 



7. C. Brandllngii. 

 Ray cells (tang.) oval or round. 



Pits on the lateral walls of the ray colls 1-8, chiefly 2-3 per tracheid. 



8. C. materioide. 

 Ray cells not determinable. 



9. C. annulatum. 

 Bordered pits in 2-5 rows. 



Ray cells (tang.) oval or oblong. 



Pits on the lateral walls of the ray cells 2-4, chiefly 4 per tracheid. 



10. C. ouangondianum. 



Pits on the lateral walls of the ray cells 4-10, chiefly 6 per tracheid. 



11. C. acadianuni. 

 Ray cells (tang.) broad or squarish. 



Pits on the lateral walls of the ray cells 2 per tracheid. 



12. C. ohioense. 

 Ray cells (tang.) oval or round. 



Pits on the lateral walls of the ray cells 1-5, chiefly 1-2 per tracheid. 



13. C. materiariura. 

 Bordered pits in 5 rows. 



14. C. Hallli. 



CoEDAiTKS JiRANDLiNGii, (Liiidl. and Iliitt., Giipp.). 



Figs. 1, 9, 10, 11. 



Bib. :— Dana, Man. Geol., 1875, 331; Zittell, Schimper ot Schenk. Handb. der 

 Pal., 1890, 242, 853, 865; Grand'Eury, Geol. et Pal. du Bass. Houil. du 

 Gard., 316; I'nger, Gen. et Spec. Plant, Foss., 1850, ; Kuowlton, Proc. 

 U. S. Nat. Mus., 1889, 52, & 1890, XII., 607; Witham, Int. Struct, of 

 Veg. Foss., 1833, 73; Grand'Eury Flor. Garb, du dept. de la Loire, 

 1877, 264; Goppert, Die Foss. Flor. der Perm. Form., 1864-1865, 255; 

 Goppert, Foss. Conif., 1850, 232; Endlicher, Synop. Conif., 1847, 299; 

 Goppert, Bronn. Gesellsch. d. Nat., III., 42 ; Felix, Sitzb., d. Natf. 

 Gesell., I^eipzig, 1882, IX., 6; Schimper, Pal. Veg., II., 328; Goppert, 

 Nachtr. z. Kennt. d. Conif. d. Pal. Form., 1888, 12. 



Dist. — A widely distributed European species. 



Although this .'i]>ecies is not enumerated among tJiose specially 

 described by Sir William Dawson, it is represented in his material, and 

 serve<l as his basis of comparison. Moreover, as stated by Brongniart, 



