88 



Transactions. 



The earliest attempt to classify the limestones of this district was made 

 by Cox.* He calls the hydraulic limestone of Limestone Island the " lower 



NEW ZEALAND 



Cretaceous and Ttrtiarh 

 fSedimentarv Rocks 



Sketch-map of New Zealand, showing the Localities where the Limestonb 

 Rocks desceibed here were obtained. 



limestone," and correlates it with the Lower Greensand formation of Eng- 

 land. The other type — Whangarei limestone — is classed in the Cretaceo- 

 tertiary, and is correlated with the Amuri limestone of North Canterbury. 



* S. H. Cox. N.Z. Geol. Rep., 1876-77, pp. 101^. 



