96 KOYAL SOCIETY OF CANADA 



cvor, HO fur us cuii l>o uscfftuiiu'd. urc locul, uiid do not atf'oci llu' i^ciiorul ur- 

 ruiigi'im'iit,oxcoi>tin soiuras Hlijts purullol to tlit'striUoinuy ropcut tliebedH. 



Thi' luyora holding foHflil H|)ongi!H, to bo doHcribed in the Hoquol, are 

 Hoon in low vecfk or ledgt'H ot black un<l oiivt? sbulo, extending along the 

 Houth side of the buy from near the mouth of fjittlc Metis Kivcr for about 

 a furlong to the eastward, and are (|uite regular and undisturbed, tlumgii 

 iiudined nt an angle of about 50°. Tho sandstone und eongloinerate im- 

 mediately overlying conformubly this band of bIuiIch is capped with 

 boulder-elay and sand, and forms the rising ground on which stands the 

 Wcslevun cliurch, indicated on the nuip. The section given on p. it^shows 

 ;ho attitude and relation of these beds, and is drawn from the ehurcli to 

 the northwestward. 



liefore ])roceeding to describe the sponge-beds and their fossils, it 

 may be well to notice the overlying sandstone und eonglomerute, and 

 similar beds in the vicinity, with the fossils thoy contain, and tho rela- 

 tions of these to other beds on tho Lower St. Lawrence. 



The up|>er saiulstone (/? in the section) is so hard that '• might be 

 regarded as a quurtzite, differing in this respect from some of the other 

 bods in the vicinity, as, for instance, those of Mount Misery and tlie 

 Lighthouse Point. It dips S. 20° W. magnetic, at an ungle of ubout 50°, 

 and is ubout sixty feet in thickness, though apparently thinning to the 

 eastward. I*s lower side is remurkubly Hut and even, and has been 

 undercut by the sea, owing to the softness of the shule below. On 

 its strata planes aro many fantastic, radiating forms indented on the 

 weathered surfaces, and akin to those which in tho Cambi-ian quartzitos 

 of Nova Scotia I have named Astropolirhon.^ No other fossilu liave bjon 

 observed in it. In tracing this bed to the eastward, it is seen to be o' er- 

 laid by, and to pass into, a very coarse conghjmerate, with an arenaceous 

 paste and partly angular or rounded boulders, some of them more than 

 two feet in diameter. Some are of a light gray limestone, others are 

 quartzite, sandstone and iiidurated slate. Some of the limestone boulders 

 hold fossils, and from one of thes*^ I obtained the following forms, kindly 

 identified for mo by Mr. Matthew : 



Olniellun 7'hompaoni, FAwmonH. Pleurotomaria ? • ' 



Pfychoparia Mefisfiica, Waktott.^ Iphidea bclla, Billings. 



P. (specie.s). Hyolithes (species). 



Profypus senectus. Branching organism (possibly a sponge). 



Solenopleura (species). Fragments of various small Trilobites. 



Stenotheca rugosa, Walcott. 



These fossils s»re all, so far as determinable, of Lower Cambrian age, 



and must have been derived from limestones already undergoing waste 



• Acadian Geology, Supplement, 1878, p. 82. 



- First found some years ago in a similar boulder from the Boule Rock. Along 

 with it was found a small sponge, Trachyuni ve.tustum, described and figured by 

 Walcott in his memoir on the Lower Cambrian. 



