I9I4.] CONCEPTION AND TRINITY BAYS, NEWFOUNDLAND. 415 



Fig. 33. Microphotograph of banded and nodular shale from 219 E6 ; 

 slide 272 ; enlarged 38 diam. a, oolitic hematite shale ; b, carbonate calcite 

 band ; c, barite ; d, pyrite. 



Fig. 34. Microphotograph of barite with chlorite replacement from 219 

 E6; slide 272; enlarged 22 diam. a, barite; b, chlorite replacing barite; c, 

 phosphatic? material. 



PROG. AMER. PHIL. SOC., LIV. 220 CC, PRINTED FEBRUARY 25, I916. 



