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SUPPLEMENTARY NOTES ON THE OCCURRENCE OF 



Aboriginal Remains discovered by Captain S. a. 

 White at Fulham (described in the preceding 

 Paper), with Remarks on the Geological Section. 



By Prof. Walter Howchin. 

 [Read July 11, 1919.] 



Remarks on the Beds passed through in the Sinking. 



The particulars supplied by Capt. S. A. White relate to 

 a vertical section of over 20 feet. Samples of several of the 

 beds passed through have been kindly placed at my disposal 

 for examination by the author of the paper, and the following 

 remarks have reference to their geological features. The num- 

 bers prefixed to the paragraphs correspond to the respective 

 beds in Capt. White's descriptions. 



Bed No. 2. — The blue tenaceous clay, underlying the 

 surface soil, probably represents the settlement of fine clay 

 in the flood waters of the River Torrens when the ground was 

 slightly above sea level, or the stage when the salt and fresh 

 waters commingled ; the pockets of sea-weed in the lowest 

 portions of this clay give evidence of this. 



Bed No. 3. — This bed, 3 feet in thickness, represents the 

 characteristic marine sands and estuarine fauna which form 

 the banks of the Patawalonga, in the nature of a raised sea 

 bed. In the sample submitted to me I observed the following 

 mollusca : — Ampullar in a quoy ana, Trochoconchlea constricta, 

 Risella melano stoma, and Nassa pauperata, all of which are 

 common estuarine forms in the adjacent waters. The matrix 

 is a slightly-cemented, somewhat coarse sand, mottled with 

 iron stains. This bed gives evidence that the estuary of the 

 Patawalonga Creek formerly reached this far north, about 

 half a mile beyond its present limits. Its upper surface has 

 been rucked by two channels of erosion subsequently to its 

 deposition. 



Bed No. If.. — Beneath the raised sea bed, as described 

 above, is an indurated black clay with its upper surface show- 

 ing a plane of erosion, varying in thickness from 10 inches to 

 16 inches. This is evidently a freshwater deposit, laid down in 

 marshy ground that carried an extensive vegetation of some 

 kind. No plant remains can be detected in the main body of 

 the clay, but near the top of the deposit a somewhat lighter- 

 coloured clay occurs in which are seen the shells of the fresh- 

 water snail, Limnaea. When a portion of the black clay was 

 placed in water it passed down to an impalpable black mud, 

 and after washing', left a residue of exceedingly fine white 

 sand, mixed with black granules of a carbonaceous kind. 



