70 HOYAL SOCIKTY (»1" CANAliA 



Hiidiul.—Ra.y cells straight, somewhat i.niTowed at the ends, equal to about 

 2-6 traehelils ; the pits on the lateral walls large, oval, round or 

 oblong, narrowly or even obscurely bordered, 1-5, chiefly 1-2 per 

 tracheid. 



Bordered pits numerous throughout the trachelds, chiefly In two, 

 sometimes In 3-4 rows, hexagonal or when more distant, oval, about 

 12.5 mlc. broad. 



TiiiiijinlUil.— Rays iinlsertate or 2-8erlate in part, upwards of 40 cells high, 

 the oval or round cells 17-35 mlc. broad. 



CoHDAITK.S ACADIAMM, Dll. 



Fig. 18. 



Bib. :— Can. Nat.. 18G3, Vlll.. 433 ; Aiad. Geol., ed. 3, 1878, 473 ; Quart. Jn'l 

 Geol. Soc, 1SC6, XXII., 145; Schlniper, Pal. Veg., III., 577; Can. Rec. 

 Sc, I., 1885, 155; Knowlton, Foss. Woods & Lig. of the Pot. Form., 

 1889, 52; Grand'Eury, Flor. Carb. du Dept. de la Loire, 1877, 205; 

 Knowlton, Proc. U. S. Nat. Mus., XII., 608. 



Dist. :— Middle Coal Measures, Joggius, N. S.; Port Hood. Mira and Glace 

 Bay, C.B.; Dorchester, N.B.; St. Georges Bay, Newfoundland. 



This specii's \vii.s urigiiially descrihed in 18t)3 from material ob- 

 tainwl from the Joggins, Nova Scotia, where it was found in the form 

 of large trees, usually silicified or calcified. > It presents no notewortliy 

 features beyond the unusual size of the trachcids in transverse section. 



Sir Wiliiaiii Dawsoir.-; nutes inilude llio (lescription of an unpub- 

 lished species tuuk-r tlie name of V. acudiotk's. A very careful examina- 

 tion of the material shows that tliis does not present enough deviation 

 from C. ac^adianuMi to justify its recognition as a separate species. 



Largo trees, usually silicified or calcified. 



Transirrso. — The large trachelds are about 62 x 62 mic. broad, the walls 9.5 



mlc. thick. ■Scattering trachelds show resinous contents. 

 Kddidl. — Ray cells often somewhat abruptly contracted at the ends, equal to 



2-5 trachelds; tne lateral walls with numerous round or oval pits, 



from 4-10 per tracheid, chiefly about 6, the border often very narrow, 



the oblong orifice % the diameter of the pit. 



Bordered pits numerous, hexagonal, 12.5 to 16 mlc. broad, crowded 



in 2-5 rows. 

 Tuiiynilial. — Rays very variable, ranging upwards of 60 cells high, resinous, 



more or less 2-seriate throughout, the oval or oblong cells from 



17-31 mic. broad. 



Can. Nat., 1863, VIII., 433. 



