107 



Surface soil ... 



2 



Limestone 



1 



Sand 



4 



Limestone 



2 



Sand 



... 18 



Limestone 



... 33 



Yellow sand ... 



... 102 



162 



The limestones are grey to pink, of a highly crystalline 

 texture, and fossiliferous, and of the same general character as 

 the top limestone of the Bunda Cliffs, excepting that some of 

 the limestone debris contains quartz grains. The bottom sand 

 is a sharp yellow to grey quartzose detritus ; near proximity 

 of granite rocks is to be inferred. 



The crystalline limestone, wherever examined, was found to 

 be fossiliferous ; but as the fossils were all in the state of 

 casts I paid very little attention to them, feeling that their 

 specific determination would be accepted with distrust. Voluta, 

 Cypraea, and Chione are common, and I have ventured to attach 

 specific names to a few very familiar forms — -Cassis subjimbriatios, 

 Trigonia acuticosta, and PlacotrocJius deltoicleus. 



The whole aspect of the stratum points to a correlationship 

 with the upper limestones forming the Aldinga series, and 

 particularly with the uppermost stratum of the older Tertiary 

 about "Wallaroo. 



Mr. J. Clark, Telegraph-master at Eucla, has presented to 

 me a few fossils and stones picked up by him on the surface at 

 Eairlie's last camp, 80 miles N.N.E. from Eucla. The fossils 

 are undoubtedly older Tertiary, and though their tests are 

 chalcedonized and deeply stained with oxide of iron, yet as the 

 matrix is a yellow crystalline limestone, I would refer them to 

 the horizon of the upper bed of the Bunda cliffs. One species, 

 the Cerithium, is not uncommon in the Turritella-marls of the 

 Lower Aldinga series, but the corals are new to the colony. 

 The species are : — Cerithium nullahoricum, Tate ; Plesiastrcea, sp. ; 

 Seriatojpora, sp. (one of the commonest of the reef-building 

 genera in North Australian waters) . 



The Yellow Poltzoal Bed. — Eallen blocks of marble have 

 attached to them a yellow friable rock consisting for the most 

 part of polyzoal debris, bearing a close resemblance to the 

 main mass of the cliff on the Murray at Mannum, and to some 

 of the lower beds on the west side of St. Vincent's Gulf. It 

 leaves a small quantity of a reddish aluminous residue after 

 solution in acid. The thickness of this band at Wilson's Bluff 

 is twelve feet, its upper surface increasing in compactness, and 

 finally graduates into the overlying marble ; its junction with 



