The old rocks, which disappear at Cobar, under the alluvium of the Murray basin, crop out again at the surface in the far west, and give us one of the chief silver-producing areas of the Continent. The natural outlet of the district is by Spencer Gulf, as Sydney is more than twice as far away; and the development of these mines has been largely due to the people and capital of South Australia. Here is one of the most famous mines at 36 Broken Hill; and here we have the camel team, the only means of 37 transport away from the railway. We are in the semi-desert area, and the existence of the mining population is only made possible by collecting the water from the neighbouring hills in great 38 reservoirs, such as we see in the picture before us. We have still to see the south-east corner of the State, where we shall find some of the most picturesque scenery and a country rather different from that which we have so far visited. We take a line running south from Sydney, not along the coast, but following the river valleys and so up again on to the plateau at Goulburn. Here we branch off from the main line southwards through the Monaro Plains; this is a high pasture land, thinly populated, though there is a growing agricultural industry in some of the more favoured spots. To the east of the plain are the Coast Ranges, to the west the Snowy Mountains; both extending over the border into Victoria. Cooma, the terminus of the railway, about fifty miles from the State boundary, lies nearly three thousand feet above sea-level. North-west of Cooma is the town of Kiandra, in the Alps, where we find snow and winter sports as in Switzerland. South-west of Cooma is Mount Kosciusko, rising over seven thousand feet, the highest mountain in Australia; here the snow lies even in summer. We reach it by 39 a road following the valley of the Snowy River, and can ride or 40 even motor up the track almost to the summit. Here are two views 41 of the river and its tributaries. Kosciusko is not an imposing peak as we see from these pictures, but merely a flattened ridge 42 lying on the top of a great tableland, so perhaps we may be 43 somewhat disappointed in the outcome of our visit.