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or dip at high angles to the south and west. And, in spite of frequent reversal of the dip, this may be said to be the prevailing arrangement. The tracing of definite synclinal and anticlinal arrangements of the strata proved, over such rough and thickly bush-clad country, a practical impossibility. The lowest beds vary from mica-schists at Cuttle Cove and at the entrance to Cunaris Sound, to indurated shales and sandstones along the shores of Kisbee Bay, and thence to the upper part of the gorge of the Wilson River; while again, in the eastern part of the district, the lower beds are highly altered sandstones that have acquired a schistose structure. Cherty sandstones or nonmetamorphic quartzite appears to be the next succeeding rock, the higher part of which are sandstones much brecciated, followed by carbon-slates and blue-clay slates. It is in the rib of intensely-brecciated sandstone that the lode worked in the Golden Site Mine, Wilson River, occurs. Following this are similar sandstones, less broken, alternating with shales, that continue to the foot of the gorge below the Golden Site, where the more extensive alluvial workings on the banks of the river begin. These sandstones continue to the south-west to the hill-tops overlooking Macnamara Creek, and stretch north-west across the gorge of the creek mentioned, and the upper parts of Sealers' Creeks Nos. 2 and 1 to the highest land overlooking Preservation Inlet, between Cromarty and Long Beach. Quartz reefs show in the upper part of these beds and on the fall to Wilson River from the saddle leading into Macnamara Creek. A reef encased in graphitic shales so closely resembles in many particulars that worked at Long Beach in the Morning Star Claim, that it may reasonably be considered a continuation of the same. This assumption is supported by the fact that the Wilson River outcrop appears nearly in the strike of the reef in the Morning Star Claim. The reefs being prospected in Sealers' Creek No. 1 lie too far to the westward, and their south strike carries these latter under the breccia conglomerates and coal-measures of the upper part of Sealers No. 2. At Long Beach the softer carbon-slates between the two headlands have a breadth of exposure of about half a mile, and are again to the south-west followed with sandstone, often charged with quartz veins, irregularly disposed and conforming to no definite strike. The Morning Star line of reef lies towards the base or in the lower part of the softer carbonslate country. This line of country is continued through (lengthwise) Steep-to Island, but on this island, more especially at its northern end, the rocks have been greatly disturbed, and are seen striking directly across the general trend of the Silurian belt of country. The reefs in Sealers' Creek being prospected by Langley and party appear to be in the western side of the soft belt of graphitic slate, while the Morning Star line is on the eastern side of the same, and the Golden Site line of reef lies in a belt of country considerably further to the eastward. Yet another line shows to the westward of all these, the eastern part of which has been referred to as showing a ramification of small lodes and stringers in the sea cliffs at the south-west end of Long Beach. This line cannot be traced to the south and east on account of the superimposition of the breccia conglomerates and coal-measures on the Silurian rocks in that direction. It can, however, be traced through the eastern and north-eastern parts of Coal Island, and on the northern shore of the island it appears characteristically, showing a network of small veins and leaders of quartz. Some of these abound in iron pyrites ; and from one of these Mr. William Docherty, well known as a prospector on the southern part of the West Coast, obtained samples of silver-bearing galena. This galena-bearing vein, after the death of Mr. Docherty, could not be discovered, but boulders containing galena, derived from some neighbouring reef, were discovered on the beach. The same line of sandstone country, charged with veins and leaders of quartz, appears on the opposite side of the inlet, in Cavern Head, where, partly in slate and partly in sandstone, a perfect network of quartz veins and small leaders appears. A reef rich in gold is reported to have been discovered on the western side of Cavern Head. This discovery was made in 1863, and during recent years many travellers tried to rediscover this particular vein, the quartz from which was stated to yield gold at the rate of 370z. per ton. Further to the north-west, at Te Whara and the Neck, the rocks are alternations of sandstones and dark-blue slates, less abounding in carbon and not so much altered as are the middle and lower rocks of the series. On the west side of South Port the Silurian rocks are identical with those at Te Whara and the Neck. At North Port slates were observed by Mr. Linck which he regarded as belonging to this series. These had numerous veins of granite intruded into them, but it was not determined whether the granite veins also cut the greater mass of granite in the near vicinity. Granite veins are numerous near the junction of the Silurian rocks with the main mass of the granite at the mouth of Kiwi Burn, and there penetrate into the Silurian rocks for nearly half a mile from the contact with the main body of the granite. The grain of the granite here intruded into the Silurian rocks is much coarser than that of the main body of the granite itself, in which no such coarse porphyritic veins are to be detected; so that, further than that the granite veins are of post Silurian date, nothing as respects the period of their intrusion can be determined, and these veins are of no assistance in fixing the age of the main body of the granite. Besides the granite intrusions, there are at least three heavy bands of greenstone, or diorite, that form rocky promontories jutting out to seaward, between the mouth of the Kiwi and midway between the Gold Burn and the Coal Burn. This formation, containing as it does the lines of auriferous reefs that have already been mentioned, is, therefore, that which most concerns this report; but with respect to pronouncing on the prospects of the district as indicating this to be a valuable goldfield, too little has been done to afford the means of judging, and, while the district is on its trial and in course of development, an unfavourable decision would probably prove a hindrance to its progress as a gold-producing district. The rocks in which the reefs occur, and their relation to the other strata of the district, exactly parallel the mining district of Collingwood, Nelson. The auriferous rocks in that district are, as here, of Lower Silurian date. They rest directly upon granite, and are followed by Cretaceous or old Tertiary rocks. The more slaty parts of the formation in the two districts mentioned contain proofs of the age of the beds, by the occurrence in them of numerous 6—C. 11.