50 



Capressoxylon. As no details of microscopical examination are given, it is not possible to 

 refer it to imy one of the various species known to the Tertiary, 



J''|{;. I). I'upr: xm.tjilo:! d'iii-j:niii^ Pi-nli. 



TriUlS\el>^- SHCtiiJU. \ -I'l. 



(Jupressoxylon dawsoni, Penh. 



Bib : Trans. R.S.C., IX, 1903, iv, 33 ; X, 1904, iv, 00. 



The first recognition of the wood of this species was made in 1903 through the examin- 

 ation of material derived from the Lignite Tertiary of Porcupine creek and Great valley. It 

 was later observed in the Cretaceous formation at Medicine Ilat, Saskatchewan^. In the 



