106 Transactions. 
of the various formations in Buru as well as in Ceram ; but this Wanner 
(1921) opposes, holding that in Buru the thrust was directed from the north- 
east towards the south-west. He compares this apparent reversal of the 
direction of thrust of a geanticlinal axis where a sharp kinking has occurred 
with the conditions on either side of the Straits of Sunda, believing, with 
Van Es (1917), that the direction of thrust in western Java is to the south ; 
while, according to Tobler (1906), it was towards the north-east in the 
adjacent portions of Sumatra. According to a verbal communication made 
to the writer by Professor Brouwer, however, there is not a general 
acceptance of this conclusion of Tobler’s. Wanner and Brouwer (1922) also 
suggest that the further continuation of the axis of Buru occurs in the 
neighbourhood of Sula Besi, the crystalline schists of which resemble those 
of Buru, and strike in a north-westerly direction, except for a single instance 
of an east-north-easterly strike which has been recorded, and he remarks 
that such a connection accords better with the zoogeographic evidence than 
the extension south-westwards to Tukang Besi, which Molengraaff (1921) 
has supposed might have existed. 
Some comment may here be made on the róle played by the Sula Islands, 
Obi, and Misol, which we have stated were in some measure like a foreland 
to the folds in Ceram, following Suess's conception, originally accepted 
by Wanner. As the result of continued investigation, Wanner (1921) now 
doubts the propriety of considering Misol at least as portion of a continental 
platform, for the moderately folded Mesozoic rocks which lie upon the 
_ crystalline rocks are similar in all essentials to the coeval formations that 
occur much more highly folded or even overthrust in Ceram*—so much so 
that they must be considered as having been deposited in the same 
geosynclinal depression. The relations of Misol to Ceram are indeed much 
more marked than its relation to Obi and the Sula Islands. 15 may be 
best to consider it as an outer portion of the geosyncline which has suffered 
relatively slight folding, rather than part of a foreland massif. 
n attempting to trace the Miocene folding farther to the west the 
structure of Celebes must briefly be considered. This is a matter con- 
cerning which very diverse views have b 
Sarasin (1912), Ahlburg (1913), Abendanon (1917), and others. According 
to Abendanon (1917), the whole region from south-eastern Asia to Tasmania 
Les alaeozoic times formed a single continental massif, which he termed 
equinoctia 
faunas of the eastern and western regions of Australia noticeable in 
Devonian and Permian times (cf. Benson, 1923a, pp. 27, 31). Abendanon 
held that this land-mass was broken up in Carboniferous times, when an 
extensive submergence took place, and in the central region (now the 
. * À point of special interest to New Zealand geology is the occurrence in both 
Misol and Ceram of dark greywacke sandstones containing T'erebellina (“ T'orlessia ") 
MeKayi, as noted by Wanner (1921). 
T bscurely preserved brachiopods, &c., found recently in the north-western 
peninsula of New Guinea may be of like age, according to a verbal communication from 
ofessor Brouwer. 
