246 
Over the whole length of the border of the Alps the folded 
miocene subalpine molasseformation dips under the chains of the Alps 
which are thrust over it, the -molasseformation at some places 
still being visible as a “fenster” under the marginal chains of the Alps. 
If the suppositions made above are true, the tertiary limestone- 
and marl-formation of the Eastern Moluccas and of Western New- 
Guinea might well be compared with the molasse -of the “vorland” 
of the Alps. 
The western extension of the tertiary rocks of Western New-Guinea, 
south of the gulf of Mac Luer, must be sought for the greater part in 
the region between Ceram and Misool, which is covered by the sea, and 
to the north of it we find the islands of the row: Soela-islands—Obi— 
Misool, which are characterized by the large extension of jurassic 
rocks and where no overthrusts could be stated Sometimes the 
strata are but slightly folded here. In the same facies these jurassic 
rocks occur at different places in Northern New-Guinea (as far as 
the river Tawarin at 139° 45’ B.L); and it seems that the continu- 
ation of the mesozoicum of these islands has to be sought for 
over some of these places on New-Guinea. Sumss') supposes the 
mountain-chains of Ceram also to continue over New-Guinea in 
the direction of the Charles-Louis mountains, and BoruM’) agrees 
with this opinion. 
In my opinion the facts, as far as known at this time, may simply 
be explained by supposing that the tertiary rocks of Western New- 
Guinea south of the Gulf of Mac Luer are connected with the tertiary 
rocks of the Kei-islands, and that the mountain-chain of Ceram bends 
to the south. The inner zones of gneisses and micaschists of West- 
and Mid-Ceram oceur also on. the island of Koer, and farther to 
the south, unto the island Fadoh of the Drie Gebroeders; east of 
these islands the strike of the normally folded tertiary rocks of West 
New-Guinea is bent to the south on the Key islands. The mesozoïe 
rocks, which in East-Ceram have a great extension and are partly 
overthrust over tertiary rocks, similar to those of West-New-Guinea, 
are found only in small quantities in the region between East-Ceram 
and the Tenimber-islands, which for the greater part is covered by 
the sea. 
Only the southwestern part of the island Groot-Obi and the island 
Gomoemoe of the Obi group, seem to belong, as for their geological 
1) B, Suess. La ace de la Terre III. 1, p. 318. 
2) G. Borenm. Neues aus dem Indo Austr. Archipel. Neues Jahrbuch für Min. 
etc. Beil. Band XXII. 1906, p. 404. 
