250 THE JOURNAL OF GEOLOGY. 
for example, flowed approximately south across Denmark and 
the southern Baltic area into Holland and north Germany, 
while the later mer de glace had a more westerly trend.. 
VI. NEUDECKIAN. 
The deposits on this horizon are best developed in the coast- 
lands of the southern Baltic. They are partly of marine and 
partly of fresh-water origin, and are intercalated between the 
so-called ‘‘lower” and ‘upper’ bowlder-clays of that region. 
The general aspect of the fauna is temperate—certainly not 
Arctic. The highest level to which the marine beds have been 
traced is 114 meters, at Neudeck near Freistadt in west Prussia. 
Probably many of the older alluvia overlying the Polandian in 
regions over which the succeeding Mecklenburgian does not 
extend ought to be assigned to the Neudeckian stage. 
VII. MECKLENBURGIAN. 
The most notable deposits belonging to this stage are the 
ground moraines and terminal moraines of the last great Baltic 
glacier. These reach their southern limits in Mecklenburg. 
Contemporaneous accumulations are the bowlder-clays and ter- 
minal moraines of the large valley-glaciers and district ice- 
sheets of the British Islands, and the terminal moraines occur- 
ring inthe great longitudinal valleys of the Alps (= “first post- 
glacial stage of glaciation” of Penck and others). 
To the same stage are assigned the Yolda-beds of Scandi- 
navia, and the t1co-foot terrace of Scotland with its Arctic 
marine fauna. Here also come most of the Arctic plant-beds of 
the British Islands, as well as those which underlie the older peat 
bogs of Denmark, south Sweden, etc. 
VIII. LOWER FORESTIAN. 
This stage embraces the deposits of the great fresh-water 
lake of the Baltic area (Ancylus-beds); the lower buried forests 
occurring under the peat-bogs of northwest Europe generally ; 
and the Littorina-beds of Scandinavia in part. No deposits on 
this horizon have yet been recognized in the Alpine Lands. The 
