Minutes of Proceedings. xv 



the Governor, were found some years ago by Messrs. Murray Bros., 

 of Quaggafontein, Colesberg Division, and have recently been placed 

 in the South African Museum. 



Mr. A. W. Eogers read a paper on the "Volcanic Fissure under 

 Zuurberg." On the south flank of Zuurberg the Uitenhage beds 

 are faulted down against the folded rocks, forming the Zuurberg. 

 The fault runs nearly parallel to the strike of the older formations, 

 the Wittberg quartzite and the Dwyka series. The fault between 

 Enon and Duncairn, a distance of 19 miles, is marked by a belt 

 of volcanic rocks, lava, tuffs, and breccias, varying in width from 

 100 yards to over a mile. Three definite necks of tuff and 

 breccia have been recognised, but the eruption took place along 

 the whole line in such a way that the lavas are at places full of 

 tuff fragments, but the tuffs do not contain pieces of the lava. 

 Where the volcanic rock does not appear, as on the Waggwa 

 road, the rocks immediately on the upthrow side of the fault are 

 shattered ; a perfect series of gradations from solid, unbroken 

 quartzites to quartzite-breccia with a matrix of the same substance, 

 has been observed within the distance of 30 yards. These facts 

 call to mind the shattering of the rocks along the faults on the north 

 boundary of the Uitenhage outliers of Willowmore and Uniondale, 

 observed by Mr. Schwarz, and they probably indicate explosive 

 action along the lines of faulting. 



A paper on the South African Denosaur " Hortalotarsus " by Dr. 

 E. Broom was read. 



Annual General Meeting. 

 August 2, 1905. 

 The President, Dr. J. D. F. Gilchrist, in the Chair. 



The Secretary read the General Eeport for the year 1904-1905. 



The Treasurer read his statement, showing a balance to the 

 credit of the Society of £250 3s. 



Dr. J. C. Beattie was elected President for 1905-1906, and 

 Messrs. J. D. F. Gilchrist, C. P. Lounsbury, H. H. W. Pearson, 

 L. Peringuey, and W. L. Sclater, were elected members of the 

 Council for two years. 



The Meeting they resolved into an Ordinary Meeting. Messrs. 

 J. G. Caink, J. ffolliott Darling, and J. Jeppe were elected 

 ordinary members of the Society. 



