ISG Proceedings of the Royal Society of Victoria. 



Summary. 



An inspection of the list of fossils from tlie Upper Maude Beds, 

 and from Waurn Ponds, brings out the close relationship existing 

 between them. The most noticealile difterence is caused by the 

 presence of gastropods in the former beds, but it should be noted, 

 that nearly the wliole of these were obtained from the section 

 above mentioned, near the Clyde, on the east bank of the river, 

 and from a deposit overlying the polyzoal rock. This o\erlying 

 deposit really represents the clays occurring at the Filter 

 Quarries, at Batesford*, where the majority of these gastropod 

 species are well represented. The deposit is of a very peculiar 

 nature, and at first sight looks like a sandy clay full of brown 

 pisolitic ironstone pebbles. A closer inspection and the use of 

 the acid bottle, show that it is really a calcareous clay, and that 

 the supposed ironstone pebbles are nearly all recognisable as casts 

 of fossils. Some of these preserve the external form, while 

 others are merely internal casts. Gastropods, echinus spines and 

 polyzoa are all found thus preserved, and the ornamentation of 

 the mollusca is frequently well-shown. All the casts are highly 

 glazed, and of a dark brown colour. They are easily separable 



« See below, p. 193. 



