48 T. S. Hall: 



minifera, as recorded by Daintree, and mentioned above. These 

 have kindly been identified by Mr. F. Chapman. ] found no 

 pyritiu casts of molluscan or other shells. 



The oxidation of the pyrites has evidently given rise to the 

 linionite, or at times haematite, which had cemented the sands 

 and conglomerates at many exposures ; for instance, the Black 

 Rocks, near Point Addis, the similar rocks half a mile west of 

 the river mouth, and the ironstone hill on which the Anglesea 

 Hotel is built. Similar ironstone conglomerates occur on the 

 river banks higher up, and at many places on the roads lead- 

 ing to Jan Juc and Ai rev's Inlet. Moreover, wells sunk at a 

 farm a mile inland up the valley yield water so highly mineral- 

 ised that it is useless for stock or for garden use, pi'obably from 

 dissolved sulphates. 



A mile west of the mouth of the river, the face of the cliffs, 

 which rapidly decrease in height as we approach Point Road- 

 knight, are occupied by extensive landslips, which are well 

 overgrown' by trees at their northern end, but broken and 

 crevassed along the sea front, and evidently have moved quite 

 recently, as the surface is bare of vegetation. An examination 

 of the cliff face shows that the overlying sandy strata have 

 moved over a clay bed of a peculiar nature, which passes below 

 sea level with a steady southerly dip. The bed of clay, which is 

 about twelve feet thick, when traced easterly soon runs up to 

 the top of the cliff, and cuts out at the top, the cliff being 

 about 80 ft. high. The underlying beds are evidently the re- 

 presentatives of the black series further east, but are bleached 

 to a greyish hue. Hereabouts they are protected by Point Road- 

 knight from the rapid wearing by the sea, and there is time for 

 weathering to act on the face, while further eastward the un- 

 sheltered cliffs are rapidly cut back. 



The clay bed mentioned above is, as already stated, about 

 twelve feet in thickness. Its ground mass is bluish grey, and 

 scattered through it are white angular pieces of clay, rarely 

 more than an inch in diameter. On tracing the bed to a 

 small point, which can be passed round at about half tide, we 

 find it has slightly altered in colour, being of a greenish grey 

 hue, and is carved into small pinnacles and chasms by *the 

 waves. The whole uiass can be cut easily by the knife, but 



