38 BULLETIN OF THE 
to the névé only of any local glaciers which might have formed in the 
north- and south-sloping valleys on each side of the “cols.” 
An amount of chloritic schist vastly greater than is represented by 
the trains may have been removed by the ice from the crest of the 
Canaan and Lebanon Range, but all, except the boulders of the trains, 
has been more or less ground to pieces in the glacial mill, and is now 
imbedded in that formation which has been the ground moraine of one 
or more general ice-sheets. 
The facts connected with the Richmond Boulder Trains throw little, 
if any, additional light on the explanation of glacial phenomena in 
general, but the theory of a general ice-sheet, as it is received by most 
geologists, seems competent to explain, in considerable detail, not only 
the origin, but most of the marked peculiarities of the trains, and in so 
far as it does this, it receives fresh confirmation from the facts which 
have been stated. 
