11 
glacial deposits of Northeastern North America, mentioned in the 
last Report. The north side of the Mont Blanc group has also 
been visited, for the purpose of getting a clearer idea of the 
present condition of the glaciers in that region, where the de- 
crease in size of the masses of ice during the past forty years, 
common to the whole mountain system of Central Europe from 
the Pyrenees to the Caucasus, has excited great attention, not 
only as a matter of scenic interest, but as bearing on glacial 
theories in general. Some geological work was also done in 
Southwestern England, and a few of the mines of Devonshire 
were examined during a hasty trip through that interesting 
region. 
