596 GREAT SERPENTINE BELT OF NEW SOUTH WALES, viii., 



Andrews, at the head of the Hunter and Manning Rivers, as 

 being of two types, "one, a holocrystallinerock with large augite 

 crystals so abundantly scattered throughout its mass as to obtain 

 for it locally the name of 'plum-pudding stone.' Other types 

 found there are dense, fine-grained, vesicular olivine-basa]ts"(5). 

 The writer has shown that, among these, are to be found 

 various types of basalt, basanite, dolerite, essexite, teschenite, 

 and theralite, with sometimes an abundance of nepheline (6, 7). 

 Indeed, there is an assemblage of basic rocks quite analogous to 

 those of the Bohemian Mittelgebirge, which Becke described as 

 a typical instance of an assemblage of Atlantic rocks. The 

 shapely cone of Wombramurra Peak, a few miles east of the 

 Pass, was not visited by the writer, but is very analogous to the 

 conical Gragin Peak near Delungra, Wariakla, which Mr. Carne 

 believes to be a centre of intrusion, and in which Mr. Card found 

 olivine-dolerite. Mount Jellore, near Mittagong, 80 miles S.W. 

 of Sydney, may possibly be of a like nature. 



Serpentine occurs on this line at the Barry, at the head of the 

 Barnard River, twelve miles distant from Nundle, and was here 

 observed by Mr. Andrews, W'ho remarked on the association with 

 it of "diorites and basic rock-types," probably dolerites, and 

 spilites(8). Mr. Longrigan, of the Barry, informed the writer 

 of the occurrence of limestone east(?) of the serpentine on his 

 property: and Mr. Stonier records the finding of Favosites in 

 limestone on the Pigna Barney Ptiver, two miles above its junc- 

 tion with the Manning (9). Serpentine occurs again at Glenrock, 

 some twenty-five miles south-east of Nundle (8), and local pros- 

 pectors say that it is also present at the old " Polly Fogal " 

 Diggings, which are not marked on any map, but are stated to 

 be sixty miles east from Scone, and forty south-east of Nundle. 

 An analysis of chromite obtained from here has been recorded (10). 

 This must be near the Curracaback River, which is crossed by 

 the serpentine (8). 



North-east from this line, serpentine has been recorded from 

 Nowendoc(8), doul)tless among rocks of the Eastern Series, and 

 will thus probably be on or near a line extending from the belt 

 of serpentine recorded by Stonier (11), which extends from near 



