BY CAPTAIN F. W. HUTTON. 431 



black. I saw none of the green greywackes which are so common 

 in some parts of New Zealand. In the black slates annelid tubes 

 are not rare. Sir Julius von Haast found them on the Tasman 

 Grlacier among debris which had come down to the Hochstetter 

 Glacier, and I found them on the Mueller Glacier. These tubes 

 occasionally attain a length of 5 inches, with a breadth of a 

 third of an inch. They are nearly straight, smooth on the 

 outside, and taper very gradually. The rocks therefore belong 

 to the Matai Series of the Geological Survey. I saw no trace 

 of plant remains in any of them, but Dr. von Haast mentions 

 " Fucoid Shales " on the southern spur of Mount Cook, near the 

 junction of the Hooker and Tasman Rivers (Lc, p. 21). Neither 

 Dr. von Haast nor myself saw any eruptive rocks, but Mr. Green 

 mentions having found on the Tasman Glacier " a kind of 

 volcanic breccia, which, according to Professor V. Ball, consists 

 of fragments of pyroxene and felspar, the latter much decomposed, 

 and some free silica."* A block of marble, mottled but generally 

 pinkish in colour, lies on the centre of the lower part of the 

 Mueller Glacier ; and near the present outlet there is a single 

 large fragment of conglomerate which contains pebbles of sand- 

 stone, quartz, greywacke, and (I think) some fragments of a 

 chlorite schist presently to be mentioned. 



Along the southern side of the lower portion of the Mueller 

 Glacier blocks of phyllite and quartz-schist are common, and 

 occasionally there are fragments of a green subschistose chloritic 

 rock, with grains of Ripidolite scattered through it or collected 

 in folise ; but none of these fragments are found on the northern 

 side. Black-birch Creek — a tributary of the Hooker from the 

 Sealy Range — also brings down similar fragments of phyllit(\ 

 quartz-schist, and the chloritic rock, as well as greywackes and 

 black and red slates : so that a patch of these schistose rocks must 

 exist near the north end of the Sealy Range. Sir J. von Haast 

 noticed tliese schists and shows them in his section, already 



* " Proc. R. Irish Academy," Dec. 9, 1882, p. 651. 



