304 Canadian Record of Science. 
fauna in this relation: although it was not recognized by 
him as such, because, neither the assemblage of species col- 
jected by Mr. Murray, and determined by Mr. Billings, nor 
those of Georgia, Vt., had been sufficiently compared to 
show that they were of one fauna. Mr. Walcott states 
that this fauna is unquestionably beneath the Paradoxides 
beds in Newfoundland, at a depth of about 200 feet. There 
ean be, therefore, no longer any doubt that the Olenellus- 
Doryphyge phase of the Olenellus fauna, which is the 
Olenellus fauna of Hastern North America, is older than 
the Paradoxides beds of the same region. 
Though this fauna is found north, east, and west of 
New Brunswick, having been recognized in Quebec, Cape 
Breton, and Massachusetts, it has not been found in the 
first named Province, notwithstanding that there are there 
no less than 1,600 feet of Cambrian measures beneath the 
Paradoxides beds. But, though this fauna has not been 
found in New Brunswick, the writer proposes to point out 
where, from our present knowledge of the subject, it is 
likely to be found. 
There is, in all the Cambrian basins of this Province, just 
beneath the oldest beds in which the Paradoxides are known 
to occur, a peculiar bed of shales, of considerable thickness, 
which, though apparently no coarser or harder than the 
beds below it, stands out in the sections with peculiar mas- 
siveness, and on examination is seen to be cut in all direc. 
tions by the burrows of large marine worms. Here the 
brachiopods lie at all angles in the shale, and in the worm- 
burrows, as though the worms, in their search for food, 
had disturbed all the successive layers of the sea-bottom, 
and kneaded the mud into a continuous pasty mass. 
This bed is at the top of Band 6., and marks the close of 
a period of disturbed physical conditions, that ushered in 
the tranquil time of the Paradoxides. In and below this 
bed, the remains of trilobites are rare; and except as re- 
gards the brachiopods, the known fauna differs entirely from 
that in the beds above. In the middle of Band b., we have 
been able to recognize an Agraulos, and at the base an 
