999 
A clay ranging in colour from yellow to red and brown, and con- 
taining nodules of manganese overlies, apparently, quite conformably 
a thin bedded limestone, which contains badly preserved shales of 
Aviculidae (Halobia). The bedded limestone is well stratified, the clay, 
on the contrary, is not distinctly stratified except in a portion of the 
section, where brown and yellowish-red clay are found to alternate. 
In the section the beds of the clay are apparently undisturbed, but 
the polished slickensides, which traverse the clay, testify to its having 
been exposed to considerable mountain-pressure. In consequence of 
the large number of slickensides the clay is crumbly and it is 
impossible to obtain a good-sized specimen without joints. The largest 
entire specimen brought by Jonker, measures 8 X 6 > 2 cm. It is 
represented on Pl. I fig. 2. The position of the limestone and the 
clay is the same; both have a strike N. 35° W. and a dip 42° 
towards S.W. The yellow clay which prevails in the lower portion 
of the section is about 40 cm. thick and is followed by red, and 
chocolate-brown clay rather more than 38 metres thick; with it the 
section terminates against the surface soil. 
Fig. 2. Manganese nodules in red deep-sea clay, Noil Tobee 
Central-Timor. 
Foto H. G. JONKER. 
In the upper portion of the section the brown clay alternates 
65* 
