REVIEWS 119 
then surely Ambocelia is not worthy of separation from Sprrifer as a 
distinct genus. 
The work as a whole is a valuable acquisition to the literature of 
paleontology, and will be warmly welcomed by all students of the 
brachipoda. SW. 
Istidens foraminiferer « Danmark og Holsten og deres betydning for 
studiet af istidens aflejringer | The foraminifera of the Ice-Age 
in Denmark and Holsten and their significance in the study 
of the glacial deposits.|_ By Vicror Mapsen, Meddelelser 
fra Dansk Geologisk Forening, No 2, Copenhagen, 1895. 
225 pp. 
The first part of this paper gives a review of the classifications by 
different geologists of the drift deposits of northern Europe, England 
and Denmark. A new classification is then proposed, mainly based on 
evidences of climatic changes in the Quaternary Age, as the author inter- 
prets them from observations in Denmark. His scheme runs as follows: 
1). Preglacial sedimentary deposits with a temperate fauna and 
flora. Weybourn crag, Cromer forest-bed in England. 
2). Preglacial sedimentary deposits with a boreal or arctic fauna 
and flora. Ledamyalis-bed, arctic fresh water-bed in England. Yoldia- 
clay in eastern Prussia. The older Yoldia-clay in Vendsyssel, Den- 
mark (?). 
3). Morainic deposits from the Norwegian ice-current in Denmark, 
northwest Germany, Holland, Belgium, and on the east coast of 
England. ; 
4). Interglacial sedimentary deposits with an arctic or boreal fauna 
and flora. Older Yoldia-clay in Vendsyssel ? Yoldia-clay at Esbjerg 
(Denmark) ? etc. 
5). Interglacial sedimentary deposits with a temperate fauna and 
flora. Cyprina-clay, etc., in Denmark, Holstein, Rtigen and Prussia. 
6). Interglacial sedimentary deposits with boreal or arctic fauna 
and flora. Yoldia-clay at Esbjerg. 
7). Morainic deposits from the older Baltic ice-current in Denmark, 
Skane, northern Germany and northern Holland. 
8). Morainic deposits from an ice-current which moved in a direc- 
tion from N. E. to S. W. in Holland, Skane and possibly in Denmark. 
