OCEANIA. 171 



" massifs," the eastern still active. The older rocks are acid trachytes, 

 followed by basic basalts and recent olivine-lavas. St. Paul is a great 

 crater occupied by the sea. Hot springs and gaseous exhalations 

 (analyses given) still exist. Acid trachytes and basic dolerites are 

 followed by feldspathic lavas, &c. ; all these are modified by siliceous 

 infiltrations. Amsterdam consists of basaltic lavas and scoria). 



W. H. D. 



Velain, Ch. [The Volcano of Eeunion.] La Nature^ No. 160. 

 Noticed in Nature, vol. xiv. pp. 333-336, with map and views. 



Verbeek, R. D. M. [Geology of Sumatra.] N. Jahrh. Heft iv. 

 pp. 415, 416. 



Refers to the occurrence of Carboniferous Limestone fossils in Su- 

 matra. Announces the discovery of a small extinct volcano, of which 

 a map has been prepared. All the other volcanos in the island are 

 colossal. F. W. 11. 



Wilkinson, C. S. Notes on a Collection of Geological Specimens 



from the Coasts of New Guinea, Cape York, and neighbouring 



Islands, collected by William Macleay, Esq., &c. Sydney Morning 



Herald, March 8 ; Annals, ser. 4, vol. xviii. p. 190 ; Geol. Mar/. 



dec. ii. vol. iii. p. 428 ; Canad. Nat. n. ser. vol. viii. pp. 156-1 (50. 



Gives a list of the rock-specimens, and concludes, from fossil evidence, 



that certain yellow and blue calcareous clays from Katau River, Yule 



Island, and Hall's Sound are L. Miocene, and like beds of that age at 



Geelong and Cape Otway, in Victoria. Gives a list of the fossils from 



Hall's Sound. The occurrence of these Miocene beds in N. Guinea 



suggests its former land-connexion with Australia. According to M. 



d'Albertis, trap is found in the valleys of Yule Island, and coralline 



limestone occupies the higher portions of the hills (700 to 800 ft.) 



R. E., Jun. 



See also : — 



Darwin, C. Geological Observations on the Volcanic Islands, &c. 

 p. 131. 



