234 Notes on the Geology of the View it, j of Port Jlhrir. [S 



to Navy point, discloses the existence of a succession of rolls which 

 tend to keep the same beds near the surface. At Navy point, 

 the dip is to N. W., while on the opposite shore of Yiper, it is to 

 S. W., or nearly so, thus indicating the probable existence of an 

 anticlinal in the channel between. These facts render it possible if 

 not probable that the coal of Eoss, Navy point and Yiper may be 

 from the same bed of sandstone, or at least that it is confined to a 

 narrow zone in the formation, and is not widely scattered through- 

 out the whole thickness, as it at first sight appears to be. 



Near Haddo, on the crest of a roll, the beds shew little sign of 

 disturbance, being nearly horizontal. Some of the sandstones there 

 contain veins of calcspar, and a peculiar grit makes its appearance. 

 A loose block of limestone lies on the beach south of the Western 

 point of Chatham Island ; I did not succeed in finding its sour 



Mount Harriet. — The principal rock is a coarse yellowish green 

 or grey sandstone apparently very absorbent of water. Close to the 

 top of the hill which is 1155 feet above the sea level the sandstone 

 appears in vertical beds ; on the ascent the rocks are much obscured 

 by humus. 



Yiper Island. — There is a good deal of irregularity in the bed- 

 ding of the sandstones which form this island ; towards the west- 

 end they are also much cut up by joints which form an angle of 

 75° with the prevailing strike there. The highest point of this 

 island is about 220 feet, its area less than half a square mile. 

 The comparatively small inclinations of the beds renders the 

 danger from landslips much less here than on Ross. 



On the north side of the island a sinking for a well through sand- 

 stones and blue mud-stones disclosed some indications of coal 

 in nests which, however, were speedily exhausted, and the excava- 

 tion allowed to revert to its original purpose as a well. At the time 

 of my visit, the well was full of water, and I could detect no trace 

 of coal in the exposed section on the side of the hill. 



Homfray's Ghat to Port Mouat. — The road between these 

 two places is about two miles long. It is carried for the most part 

 along the Hue of junction between hilly ground covered with lofty 

 jungle and a mangrove swamp, in some places it runs across the 

 swamp on a bund. 



