Ii4'l 77/' Alinr'xiln (iinliKl't.st. (UtolxT, 1S91 
sioii of till- classifioatioii of Pknstocene fonnations. l^resident 
CiiAMHKRi.iN opened the discussion by remarking that it is possi- 
ble to chissify these deposits upon three bases: 1. Structural; 
'1. Chronological; :J. Genetic. lie then liresented. in i)rinted 
form, a •• Proposed genetic classification of Pleistocene glacial 
formations." The general classes were noted as follows: — 
I. Formations produced by direct action of Pleistocene 
glaciers. 
II. Formations produced In* the coml)ined action of Pleis- 
tocene glaciers and accompan3ing glacial drainage. 
TIT. Formations produced by glacial waters after their issu- 
ance from Pleistocene glaciers. 
\\ . Formations produced by floating ice derived from 
Pleistocene glaciers. 
\ . Formations produced by shore ice and ice floes due to low 
Pleistocene temperature, but independent of glacier action. 
?VI. Formations produced by winds acting on l^leistocene 
glacial and glacio-fluvial deposits under the i)eculiar conditions of 
glaciation. 
The first class includes (1) sul)glacial till, drunilins. and suV)- 
marginal or lodge moraines, these being proilucts formed at the 
Ijase of the glaciers; (2) dump moraines, englacial till, and 
medial moraines, these being products derived from material 
borne on the glaciers and within them: and (3) push moraines, 
and lateral moraines, these being products of the mechanical 
action of the edge of the ice. 
I'nder the second class are osars. kames. overwash aprons, and 
other tracts of assorted drift. 
The third class comprises valley drift, loess, and deltas formed 
in lakes or the sea. 
The type of the fourth class is glacio-natant till, which is sup- 
posed to be deposited in glacier- fringing lakes or in the ocean. 
In the fifth class are various shore ridges, littoral deposits, and 
•off shore deposits. 
To the sixth class dunes and eolitin loi'ss may be referred. 
\\\ discussion of this scheme of classification. T*rof. Albert 
CviDRV spoke of the Quaternary faunas of the Paris basin, of 
England. Germany, and Italy, some of which imply cold and 
others warm climatic conditions. 
Prof. II. Crednkr and Haron de Gekk approved the foregoing 
