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of the trough (Fig. 2). Of course there are, as on other fields, exceptions to the rule, both in structural features and in the number of lines of lode in each system. At a point on one line of system I noticed an inverted saddle lode, and at another point a bow of quartz having the arch up. Dyke material is to be seen in most of the systems of lodes inspected. In some instances this ma­terial is associated with the quartz for­ma tions of the main line of a system, in others not. I noticed both in abandoned workings and those iu progress, that the situations in lodes which are favoured by deposition of gold in payable form are at or near the line of contact of the minor drainage in slate-rock with the larger crack lines of drainage now filled with lode stuff.* The length of the favoured situation
A survey to show the exact relationship in contact of the bars of gold-slate and their drainage to the lode formation of each system of lodes, would he of great service in the mining of the Harrietville formations ; more so, perhaps, than on any other field I have visited, on account of the peculiar