4 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Nov. 6, 



with my own observations. He says, " I have met with no other 

 description of tin-ore than the peroxide (cassiterite), even in speci- 

 mens from veins. The ore, so far as I have seen it, is associated 

 with granite only, which is invariably red ; i. e. the felspar is a pink 

 or red orthoclase, and the mica is generally black ; but when crystals 

 of tin-ore are found in situ the mica is white. 



" The granite generally is coarse-grained and seems to disin- 

 tegrate readily under atmospheric influence. There are numerous 

 bands of loosely aggregated rock, granitoid in character, highly mi- 

 caceous and traversed by bands and veins of quartz in all direc- 

 tions ; in these bands crystals of tin-ore are abundant, and they 

 (the bands) seem to have constituted local feeders along the courses 

 of drainage. 



" The crystals of tin-ore are generally found imbedded in and along 

 the margin of the quartz threads or veins in those bands. In some 

 instances they are imbedded in the micaceous portions only ; and the 

 mica is invariably white in those instances in the bands referred to. 

 The strike of the bands and the distinct quartz veins in the granite 

 is generally north-east and south-west. 



" Along the western margin of the granite a broad belt of meta- 

 morphic rocks (slates and sandstones) extends on both banks of the 

 Severn, constituting a series of rugged broken hills and ranges, in 

 parts difficult to traverse except on foot ; this tract of country 

 stretches from five to six miles west of Ballandean to Maiden- 

 head on the Severn, where the granite again appears and also the 

 tin -ore. 



" No tin floors, as at the Elsmore mine, in New South "Wales, 

 have been discovered." 



The extent of mineral country applied for up to the present time 

 is as follows : — 



Number of selections 850. 



Aggregate area about 74,000 acres. 



Of these, judging from those already dealt with, it is probable 

 about one third will be rejected as being land previously applied for 

 or overlapping, leaving about 46,000 acres, for which permissive 

 licenses will be issued, nearly the whole of which have been 

 selected with frontages to the watercourses. 



Although selections still continue at the rate of fifty portions 

 per week, this cannot be maintained for more than six or eight 

 weeks longer without the discovery of deposits in new localities 

 hitherto unexplored, or lodes that may be found to exist on the 

 tableland, as nearly the entire length of the watercourses is 

 already selected. 



The population at present located on the tin-fields may be set 

 down as, at the least, 1200, while it is more likely to amount to 

 1500, the principal centre of occupation beirig the now rapidly 

 rising private township of Stannum, the protracted delay in the 

 sale of the government allotments in the township of Stanthorpe 

 being the only reason why this town has not already doubled the 

 number of inhabitants that are at present located on the private 



