998 
The late Prof. Dr. H. G. Jonker *), who, in the year 1916, made 
palaeontological explorations in the island of Timor, was fortunate 
enough to make a discovery, which decidedly increases the know- 
ledge of fossil deep-sea deposits. 
In the bed of a little brook, discharging itself into the Noil Tobee, 
also called Noil Toninu, on its right bank he found near its 
mouth a good exposure of beds of red deep-sea clay, containing, 
besides numerous nodules of manganese also teeth of L/asmabranchii, 
especially of sharks. The Noil Tobee is a small river rising about 
4*/, km. KH. N. B. of Niki-Niki in the district of Amanuban in 
Central Timor and joins the Noil Bunu at 3 km. to the North of 
its source, a little below the Fatu Toninu. The Noil Bunu flows 
into the Noil Noni’), and this again into the Noil Benain, which 
river discharges into the Timor sea, not far from Besikama. The 
spot in the bed of the brooklet, where Jonker has found this red 
clay, is situated about 480 m. above the sealevel. 
Jonker had a clear vertical section dug out and entirely freed 
from debris which had been transported by the brooklet. A sketch 
taken from his diary is reproduced here without any alteration. 
. Red clay. 
P. Thin bedded limestone. 
„CC. Boundary Plane between 
ie andieP. 
AB. 2 meters. 
Fig. 1. Section in the Noil Tobee. 
1) Prof. JoNKER by his sudden death on 19 Jan. 1917, was prevented 
from preparing any of the results of his explorations for publication. His 
collections are stored now in the geological and palaeontological museum of 
the Technical High School at Delft. I have been able to make use of his 
diary in preparing this article. 
?) This portion of the Noil Noni is sometimes considered to form a part 
of the Noil Benain. 
