34 Transactions. 
with the Wichita formation in North America. We thus see that the 
Tethys geosyncline, of the duration of which in Mesozoic times we usually 
think, was marked in the Permian and extended from the Mediterranean 
area to the East Indian Archipelago. But a certain independence appears 
in the development of the faunas, so that the connection between them 
was not completely open . . and it is not remarkable that littoral 
sediments should have been formed [here] in this geosyncline " (Brouwer, 
1919). 
The presence of fossiliferous Permian beds in Rotti and Savu has also 
been noted, but in Java the oldest exposed formations are Cretaceous. 
An important Permian series is developed in western Sumatra, of which 
m 
presented to the British Association in 1915 and 1917, and in Professor 
David's (1919) last discussion of the question, is indicated in the following 
diagram :— 
Lower Monne Greta 7 А 
дег Mar. 
NIFEROUSIP E R Ме. CARBONIFEROUS 
"MOUPO PAL&O-PERMIAN OR PERMO- CARBS INEO-PERM| 
pore ee OKWBONIFEROUS jis PERMGregory 17 
MID-CARBSIUP CARBIPERMIAN OR PERMO-CARBONIFEROUSDavid 'I9 
Diagram showing Me ms classifications of the Carboniferous and Permo-Carboniferous 
of New South Wales. (Relative thicknesses not to scale.) 
The palaeogeographic features of eastern A i i iod 
| х ustralia during the per! 
ber: long been studied by Professor David (e.g., 1907), and е also being 
