Editorial ('ominviif. 24:3 
not developed in northern latitudes. Organic deposits Ijetween 
glacial layers are abundant in the "West. Init do not belong to a 
single horizon. Many facts of erosion and physical geology in- 
dicate that the Glacial period in America was widely differentiated 
and of long duration. How many distinct epochs it embraced we 
do not as yet know. 
Prof. E. D. Cope asked leave to add a remark concerning Pleis- 
tocene palaeontology. An abundant tropical fauna is found in the. 
Equus beds. If these are of interglacial age. there is indicated 
for that time a very warm climate. This fauna is succeeded by a 
truly boreal fauna. These may become the basis of a chronologic 
^uVidivision of Pleistocene deposits. 
Dr. Hans Reusch, of the Geological Survey of Norway, ex- 
liibited slabs of sandstone bearing Palaeozoic glacial stritt and 
furrows, from the Varanger fjord (noticed in the Am. Geologist, 
vol. VII. p. 388. June. 1891). 
During the afternoon of a later day of the Congress, some of the 
geologic features of the countrv to be traversed b}' the western 
excursion, which started immediately after the adjournment, were 
described. The Pleistocene topics were the following: President 
Chamberlin, on the series of terminal moraines, the driftless 
area of Wisconsin, the recession of the falls of St. Anthon}', the 
glacial lake Agassiz, etc., and Mr. Gilbert, on lake Bonneville. 
whose area will be entered b}' the railwa}' excursion part^' through 
Cache valley, the old outlet of that lake, and on the recession of 
the falls of Niagara, which will be visited after returning from the 
Far West. 
Under the courteous guidance of Mr. X. H. Darton. of the United 
States Geological Survey, many of the members of the Congress 
examined sections of the Potomac. Severn. Pamunkey, Chesapeake. 
Lafaj'ette, and Columl)ia formations in Washington and its vi- 
cinitv and alona; the lower course of the l^otomac river or estuarv. 
EDITOEIAL COMMENT. 
Ti£E Intekxatioxal Coxgkessof Geologists. Wasiiingtox Meetixg. 
The late session of the International Congress, while an im- 
portant event which will V)ear fruit in the near future conducive 
to the progress of the science of geology, cannot be said to take 
equal rank with those which have preceded it. It afforded great 
