234 THE CANADIAN NATURATIST. [June 



50 degrees. At Mr. Burkner's last shaft they dip N. 50 W., and 

 are already to the west of the crown of the arch, produced by the 

 lateral crush or squeeze between the walls of the great disloca- 

 tions. 



" Hence the zone of rich auriferous quartz, dipping with the 

 strata, has already begun to plunge to the west at an angle of 

 about forty or fifty degrees, and must be sought for below the 

 depth of 110 feet, at which depth the work was stopped. 



" The course of the rich zone, west of area 201, will be nearly 

 parallel to the axis of the anticlinal, through areas 202, 203, 

 south part of 157, 156, 155, &c., but descending westerly at an 

 angle of about 45^^, in a word, being roughly parallel to the inter- 

 section of the Tudor vein, as shown in the east and west section. 



" Mr. Clarke states that no visible Gold treak was met with 

 in that part of the Tudor Lead which passes through some of 

 the properties east of Mr. Burkner'b areas. But the " Streak" 

 on the North Lead dipped from west to east, and the '' Streak" 

 on the North Taylor, South Taylor and iSo. 6 Leads, dipped 

 from east to west. It is much to be regretted that no reliable 

 data exists from which diagrams, showing the auriferous zones 

 on these leads, can be constructed. The circumstance of the 

 quartz, from all being mixed before crushing, makes it impossible 

 to collate the necessary observations. The general fact is stated 

 as the result of observations during the time the work was going 

 on. 



^ ^ >fC i^ ^ 



"A section, in detail, across three thousand feet of the strata at 

 Mount Uniacke, made last summer, enables me to institute a 

 comparison with the Waverley beds, and to draw some general 

 conclusions, which show a remarkable similarity between the struc- 

 ture of these districts. 



" The east and west anticlinal, at Mount Uniacke, is similar in 

 form to that of Wavei-ley, and may be described as a sharp fold, 

 with an overturn dip on the south side. The summit has not 

 been flattened or compressed, and it is probable that the overturn 

 is greater than at the last-named district, — and bends over to the 

 south instead of to the north. 



•' The rocks are generally similar in composition, and are ar- 

 ranged in alternating bed of whin and slate, with a bed of gritty 

 quartzite not less than 380 feet thick, where the section was made, 

 and without visible partings of slate. Succeeding this enormous 



