6 



1. The Lciaver Shales. — Thej^e consist of liighly fos.siliferous tirg-il- 

 laceous shales, containing n small percentage of calcareous matter, 

 interstratitied with greenish or greyish sandstones, Avhich are also very 

 fossiliferous. The hase of the series is characteri/ved hy the occurrence 

 in it of seams of anthracite and beds of claj^ ironstone. So far as 

 examined, the eastward outcrop of these shales malvcs a rudely S-shaped 

 curve, which extends from the N.W. of Moj-esby Island across Skidegate 

 Channel (or Inlet) to Graham Island, and includes South, Maud and 

 Lina Islands. This edge of the syncline has a general westerly diji of 

 from 9° to 30°. 



The western outcrop of chc Lower Shales has been traced across the 

 N.W. arm (called Long Arm on the map) ol" Skidegate Channel, from 

 the S. to the N. side, to the Queen Charlotte Anthracite Coal Mining 

 Companj-'s worlds at Cowgitz. The sti-ata here are niuch contorted, biit 

 have a general easterly dip at a high angle. With the exception of one 

 species, all the fossil shells were obtained from I'ocks of this division, 

 the two outcrops of which are indicated on the map by the figures 1, 1. 

 Unio Hubbardi Avas tbund abundantly iji bituminous shale at Wilkes 

 tunnel, near Cowgitz (F.j : and specimens of a l»ivalve, pi'obably 

 Inoceramus concentr Icus of Parkinson, Avei-e coUeeteil at a small bay to the 

 south of Christie Bay (F.) : all the rest are from either Maud or Lina 

 Islands. As the shales on these two ishuuls belong to the same geolo- 

 gical horiz(^n, Mr. IJichanlson did not think it necessary to keep the 

 fossils from each locality apart, and it is unw impossiI)le to separate 

 them. 



2. Coarse Conglomerates. — The line of strike of these beds runs 

 parallel to that of the rocks of the previous division. IMie shaded ])or- 

 tions on the map indicate the distribution of the conglomerates as 

 actually observed, and the dotted lines which enclose tigure 2, show 

 their supposed extension under water. No lines of bedding were traced 

 in these deposits, which ajipear to be unfossiliferous. 



3. Upper Shales and Sandstones. — The position of these rocks is 

 in the centre of the syncline. Their outcrojj has been followed along 

 part of the north shore of Skidegate Channel, on Graham Island, which 

 forms the northern boundary of the space pai'tly surrounded by dotted 

 lines on the maj). These last inclose a solitaiy 3, as well as Eeef Island 

 and Weed Eoclv. A few fragments of fossil plants were collected in the 

 LTpj)er Shales at one locality (F.), also two or three specimens of a shell 



