H7 



Summary of Strata 

 Passed through in the Tintinara Bore. (Surface 62 ft. above 



sea-level). 



Recent (Terrestrial). 



Travertine, compact and rubbly ... 



Newer Pleistocene (Marine). 

 Sand (a few marine shells) ... 

 Yellow and grey sands (shells very abundant) 

 White friable calcareous silt (apparently 

 comminuted polyzoal debris, shells rare) 

 Black clay (with scattered shells) ... 



Eocene (Marine). 

 Blackish-brown sand (with numerous fossils) 244 — 253 



Total thickness of the Newer Pleistocene beds is 220 ft., ex- 

 tending in depth from 38 ft. above sea level to 182 ft, below it. 



The calcareous silt (154-160 ft.) was regarded by Mr. Clark as 

 the equivalent of the polyzoal limestone of our Eocene, but, as 

 may be gathered from my List, the under-laying black clay (160- 

 244 ft.) contains the same species of mollusca as occur in the 

 beds over-laying it. 



To account for a few Eocene fossils in the washings from the 

 material labelled 220-244 ft., there has been some reconstruction 

 of the Eocene-surface or the basal portions of the black clay and 

 the upper-most portion of the Eocene sand-bed have been acci- 

 dently mixed in the process of boring. But recognition of their 

 respective sources is easy by the fact that the Pleistocene-shells 

 show lustre in contrast with the dark-brown colour and opacity 

 of the tests of the Eocene-species. The Bankivise from 220-244 

 ft. still retain their colour-markings, and the Erycinid bivalve is 

 quite pellucid. 



List op Species."^ 



[The prefixed asterisk denotes abundance.] 



Purpura textiliosa, Lamarck. 

 *Nassa monile, Kiener. Also 145-154 ft. 



Marginella muscaria, Lamarck. 



Marginella muscaria, var. minor. At 220-244 ft. 

 *Marginella turbinata, Lamarck. Also 220-244 ft. 



Columbella semiconvexa, Lamarck. 

 ■'"Neverita conica, Lamarck. 



Neverita sagittata, Menke ? 

 r- Bittium estuarinum, Tate. 

 *Syrnola Jonesiana, Tate. 



♦Examples are included in the Palseontological Collection at the Museum 

 of the School of Mines. 



