Plate I. 



A. F. MOLENGRAAFF. "On the occurrence of nodules of manganese in 

 mesozoic deep-sea deposits of Borneo, Timor and Rotti, their signifi- 

 cance and their mode of formation." 



Fig. 



1. Manganese nodule in Jurassic marl with chert-nodules and 

 radiolaria from Sua Lain, Island of Rotti. Original size. 



Fig. 2. Manganese nodule in triassic deep- sea deposits, in the vicinity of the 

 mountain Somoholle, district Beboki, Island of Timor. Original size. 



Proceedings Royal .\cad. Amsterdam. Vol. XVIIl. 



