PHYSICAL ASPECT OF CAMBRIAN ROCKS IN EASTERN CANADA. 253 
ARTICLE VII. 
PHYSICAL ASPECT OF THE CAMBRIAN ROCKS IN 
EASTERN CANADA, WITH A CATALOGUE OF 
THE ORGANIC REMAINS FOUND IN 
THEM 
Observed and described by G. F. Matthew, LL. D., F. R. S. G. 
Read April 5, 1904. 
About twelve years ago the writer contributed to this Society 
a “ List of the Fossils found in the Cambrian rocks in and near 
St. John.” Prefixed to this list was a synoptical view of the 
groups of Cambrian strata in this district, with statements of 
their approximate thickness ; four sections were given. See 
Bulletin X, page xv. 
These sections form the basis of the estimates of the thick- 
ness of the Cambrian rocks in the St. John basin, and of the 
nature of the sediments of which the Cambrian system here is 
composed. Other sections, showing further details of the strata 
and comparing them with Cambrian rocks in other countries, will 
be ‘found in the Transactions of the Royal Society of Canada, 
Vol. VIII, Sec. iv, pp. 123-130, and Vol. VII, Sec. iv, p. 142. 
The range of the several species of animals that are found in 
the Cambrian of this district is shown in the same Transactions, 
Vol. V, Sec. iv, p. 161 ; Vol. X, Sec. iv, p. 16, and a full table of 
the species in Vol. XI, Sec. iv, pp. 113-119. 
Since the list first above referred to was published, many 
additions have been made to the Cambrian faunas of this region, 
and studies have been extended over a wider field, and the time has 
now come when a more general review of the Cambrian deposits 
can be profitably made. The Atlantic seaboard of America has in 
the meantime been the field of study of a number of noted geolo- 
gists, both those connected with governmental geological surveys, 
and of those who are students from universities, as well as of 
