Diet ie Y 
iad 

r891.] Proceedings of Scientific Societies. 947 
2. At bass level. 
a. Littoral. 
arsh. 
c. Alluvial (certain terraces, etc.) 
3. Above base level. 
a. Torrential. 
ő. Talus (including playas). 
B. Glacial : 
1. Direct. (Chamberlin’s class I.) 
2. Indirect. (Chamberlin’s classes II. to V., in part.) 
C. Aqueo-Glacial: (Chamberlin’s classes II. to V., in part.) 
D. Eolic : (Chamberlin’s class (?) VI.) 
1. Direct. 
a. Lava sheets. 
é. Cinder cones. 
c. Tuffs, lapilli sheets, etc. 
2. Indirect. 
a. Ash beds. 
ġ. Lapilli sheets. 
Prof. Chamberlin, in closing the discussion, said that there was great 
difficulty in applying a chronological classification, and that such a 
classification might even act as a barrier to observation and to the 
recognition of the truth. ‘Chronological classification is the ultimate 
goal of glacial studies, but it is something for which we are not as yet 
repared. Red, oxidized subsoils are not developed in northern 
latitudes. Organic deposits between glacial layers are abundant in the 
west, but do not belong toasingle horizon. Many facts of erosion 
and physical geology indicate that the Glacial epoch in America was 
widely differentiated, and of long duration. How many distinct 
periods it embraced we do not as yet know. 
Prof. Cope: An abundant tropical fauna is found in the ‘‘ Equus 
beds,’’ which, if they be of interglacial age, indicates at this time a 
warm climate. This fauna is succeeded by a truly boreal fauna. In 
this is contained material for a chronological subdivision of Pleisto- . 
cene deposits. 
Prof. Gaudry read the following remarks at the close of the 
congress : 
Mr. President and Ladies and Gentlemen: 
We regret that Prof. Joseph Prestwich, president of the fourth in- 
ternational geological congress, was not able [to be present to install 


