SUPERFICIAL GEOLOGY—HONEYMAN. 141 
tercolonial Railway in 1873. Transactions Vol. IJII., page 
349. We read, “the gravel banks which obscure or partially 
cover the rocks of this band seem to merit more than a 
passing notice. The sectious on both sides of the railway indi- 
cate the thickness and the extent of the accumulations of gravel. 
An examination of the material (e g) boulders, gravel and sand, 
shows that it is chiefly, if not wholly derived from the surround- 
ing rocks.” 
The extent of the accumulations, their breadth and depth show 
that the waste of rocks must have been very great. The round- 
ness of the material shows the amount of rolling to which it had 
been subjected, while its stratification indicates that water was 
the agency engaged in arranging the banks. 
The formation of the material may largely belong to a period, 
or periods anterior to the post pliocene, while its diminution and 
partial transportation southwards was the work of the agencies 
ot the latter period, We. 
We regard the gravel beds as the representatives in formation 
and time of those formations that occur between the triassic and 
post pliocene, as well as the post pliocene itself. We thus give 
work and attributable results to those mountain agencies which 
we find now in operation, and which we have no right to regard 
as quiescent from the triassic to the post pliocene periods. 
This is represented by a gap in the deep colouring of the Cobe- 
quids and light vermzlion. 
The small proportion of colouring in our map, serves to show 
the extent of the investigations to be made, before the colouring 
can be completed. 
