Notices of Memoirs — Prof. Hubert — Folcls of the Chalk. 75 
of the terrace is above the summit level of the pass, it will be 
difficult to avoid the conclusion that it is an old sea-margin. At the 
time I first saw the water-mark and terrace, I had no hesitation 
about ascribing thein to the sea; but on returning to England, 
I found that the Norwegian geologists do not admit so great a 
depression. I cannot see that the mere absence of shells is an 
insuperable objection to the beds in question being marine ; for 
surely the climate might have been unfavourable to the existence of 
shell-fish. 
If, on the other hand, the said terrace is on a level with the water- 
shed (and there is certaiuly no great difference between them), one 
is irresistibly led to think of the similar case of the parallel roads of 
Glenroy, and to speculate on this terrace too having been due to the 
waters of a gigantic Marjelen See, dammed back by ice tili it over- 
flowed the summit of the pass at Molmen ; and it is significant that 
I could see no trace of terrace or water-mark on the Komsdal side 
of the pass. 
But the above is not all. There is in the same district a second 
horizontal mark on the solid rock, several hundred feet higher than 
the 2000 one. This, too, appears to correspond with sand-terraces in 
the recesses of the high glens ; but I was not able to visit it, and can 
form no more than a guess as to its height ; it probably is as high as 
the plateau of the Do vre Fell, — that is, more than 3100 feet above the 
sea. This plateau I know to be covered with large gravel mounds 
between Dombaas and Folkstuen. Here, again, it is striking, that 
the water-mark should seem to correspond with the level of a water- 
shed. But it is useless to speculate, and would be absurd to offer 
an opinion on the subject without examining the ground. I will 
merely say, that only one of two conclusions seems open to us ; 
either the terraces and water-marks are old sea-margins, or eise they 
are the margins of huge ice-dammed lakes. 
The felis rising above the high-level terraces and water-marks are 
rounded, and of a general moutonneed look. This general glaciation 
of the high felis must have taken place either before or simultaneously 
with the deposition of the terraces, as any subsequent ice-sheet would 
inevitably have swept them clean way. 
The Norwegian Geological Map represents the valley, above and 
below Dovre, for the distance of forty-one kilometres, as occupied by 
alluvial and post-glacial sand ; but whether this is intended to include 
the high-level terraces as well as the sand-heaps in the valley 
bottom I do not know, but presumably it is. 
1TOTICES OF IMIIEiyEOIIFS. 
I. ONDULATIONS DE LA CllAIE DANS LE NORD DE LA FRANCE 
Deux Systemes de Plis, — Age de ces Plis. Par M. Hebert. 
(Annales des Science Geologiques, tom. vii. No. 2, Paris, 1876.) 
I N a paper read before the Societe Geologique de la France, in 
June, 1875, M. Hebert described a series of nearly parallel 
