﻿364 



Notices of Memoirs — Prof. Owen — 



I conclude with appending a table in which the various local beds 

 are correlated as far as possible with one another. I would point 

 out that the horizon of the Malm-rock is somewhat uncertain, but 

 that its fauna apjDcars to belong to that of the P. asper zone ; also 

 that I have included Etage B, and beds 5 and 6 of the Devon section, 

 in the same division, thus giving to it a thickness of from 35 to 

 45 feet. 



While thus endeavouring to limit satisfactorily the three stages 

 into which the Gault and Greensand can be divided, and which it 

 is important to recognize, it must be remembered that they really 

 l^ass into one another and form a continuous series ; so that it is 

 impossible to draw very definite lines between them such as that 

 which does exist above the P. asjjer zone and divides it from the 

 overlying Chalk-marl. 



Zones. 



5. Ploco- 

 scyphia 

 mceandroicles 



4. Scaphifes } 

 (equalis 



3. Pecten 

 asper 



2. Amnion, 

 wflatus 



1. Ammon. 

 lautus 



Folkestone 

 (Price) 



Clayey 

 marls 



Qy. of Ploc. 

 mcean- 

 droides 



Zone of 

 Stauronema 



Absent ? 



Sandy and 

 marly clays 



Gault clays 



COMPAKATIVE SECTIONS. 



Merstham Selbourne I. of Wight 

 (Barrois) (Geol. Sur.) (Barrois) 



ChalfcMarl Chalk Marl 



Chloritic 

 Marl 



Upper sands Upper, sands 

 & Firestone j and 



1 MalmEock 

 Lower sands Sandy marls 

 and marls i 



Gault Gault (part) 



Marl with 

 Turrilites 



Qy. olFloc. 



mcean- 

 droides 



Chloritic 

 Marl 



Sandstones 

 D. C. & B. 



Sands and 

 Sandy- clays 



= A. 

 Black clay. 



Devon 



(Meyer) 



(Absent.) 



(Absent) 



Fo. 13. 



5 to 12^ 



"Warminster 



beds. 



2 to 4 



Blaekdown 



fauna 

 Black clay 



"Wiltshire 

 (Barrois) 



Cambs 



Marl with Marl with 

 Rh. Martini Brachiopods 



Absent 



Chloritic 

 Marl 



"Warminster 

 beds 



Micaceous 

 sands and 



Dark clay 



Cambs 

 Greensand 



Absent. 



Absent or 

 base only 



Gault. 



iNTOTioiES OIF ^yI::E^^vd:oII^s. 



I. — Professor Owen's Fossil Mabimals of Australia. 



IN pursuance of his aim to leave records of the vertebrate fossils of 

 our Colonies, Prof. Owen, after the issue of his " Catalogue of the 

 Fossil Eei^tilia of South Africa " (4to. 1876), proceeded to prepare 

 for press his notes " On the Fossil Mammals of Australia," portions 

 of which have from time to time appeared in the " Philosophical 

 Transactions." To the materials systematically arranged in the 

 work now issued he has premised a chapter on the Fossil Marsupials 

 of Great Britain, the whole being included in two quarto volumes, 

 one of text (pp. 522, with interspersed woodcuts) ; the other of 

 plates, 132 in number, under the title " EesearcheS' on the Fossil 

 Eemains of the Extinct Mammals of Australia." The aim of this 

 work is, mainly, to afford the Australian students of Palaeontology a 

 ready means of comparison of the mammalian fossils which may 



