20 PROCEEDEfaS OF THE GEOLOGICAL SOCIEXr. [KoV. 8, 



Hepatic Pyrites f, and small fragments of Haematite, rolled. 



Agate, various, not nearly so abundant as the Ilmenite and 

 some other minerals ; subangular and rounded, mostly very 

 small and very much water-worn ; some of the little pebbles 

 highly glazed. Also some few fresh fragments, including 

 small waste flakes and a little implement used by the Bush- 

 men in making perforated disks or beads of Ostrich egg- 

 shell. 



A group of small Quartz crystals (some peculiar), including 

 Amethyst, from a vein or a gcode. 



A small bit of Ostrich egg-shell. ' 



No. 16. From Jager's Fontein. Page 11. '. 



A piece of Ostrich egg-shell. 

 ITo. 17. On the Orange River, tliirty-s'ix miles helow Hopetoiun. 

 [Probably the "Asbestos Mountains" of Mr. G. A. Bain's 

 Map, Geol. Trans, ser. 2, vol. vii. pi. xxi.] 



Crocidolite, partly decomposed ; deep amber in colour, passing 

 here and there into blue. 

 No. 17*. From the same place. 



Seam of altered Crocidolite (deep yellow), with parallel layers 

 of siliceous Ironstone (dull yellowish-brown -Jasper), and of 

 Magnetite, attached. 

 No. 18. FromtJie same place. 



A piece of a dull browniah-grey chalcedonic seam associated 

 with the altered Crocidolite. 

 Nos. 19, 20, 21. From Pretoria, Magaliesherg. Page 14. 



19. Fragment of rock composed of coarse Mica and Quartz. 

 20. Galena. 21. Galena and Quartz, with a very little Car- 

 bonate of Copper. 

 No. 22. From three sources of the Umglmvooho. Page 14. 



Rock-crystal, fresh and subangular. 



Dark-coloured and other Agate, abundant; subangular and 

 rolled. 



Lydite, subangular. 



Haematite, subangular. 



Green Glass, subangular (water-worn), 

 Nos. 23 & 24. From near the source of tlie Zeitza^. See page 14. 



Brown earthy Amj^gdaloid with Ileulandite and Greenearth. 



Grey Trap-rock with Agate ; freshly broken. 



Subangular Agate. 



Pive pieces of broken unworn Agate. 



Pock-crystal (from an Agate?). 

 No. 25. From near the sources of the T'somo. Page 14. 



Pebble of red and brown riband Jasper, with ancient fracture 

 (glazed). 



. t Bearing evidence of the presence of metamorphic rocks. 



I In a letter dated Oct. 10, 1871, Mr. Stow informs me that he has obtained more 

 specimens IVom this river, like those of the Vaal gravel, and that he is informed 

 of some small diamonds having been found ou the Zeitza, S.E. of the Draakeus- 

 bcrg. 



