FOSSILS AM) ROCK-SPECIMENS. 587 



with pyrites. This exposure would seem to represent the granitic 

 rise of the more southern parallel to which allusion has ^already 

 been made. 



Nos. 5 & 6. On either side of the next great bend of the Gascoyne 

 river, and about 40 miles to the eastward of the last-noted exposure, 

 are two hills, one on either side of the stream, known as Mt. 

 Steere and Mt. James ; the latter is marked in Mr. Gregory's section 

 as about 2000 feet high, and as composed of metamorphic rock resting 

 on " granite " pierced by dykes. It is represented by specimens 

 No. 6 of Mr. Forrest's collection. One of these is a whitish quartzite 

 or quartzose grit with a little mica and many specks and small 

 crystals of magnetite. The second specimen is a very quartzose 

 micaceous schist, or gneiss, similarly speckled with magnetite. These 

 would seem to belong to Mr. Gregory's metamorphic rock indicated 

 in his section by the symbol i. On the other hand the rock of Mt. 

 Steere, JS T o. 5 of the collection, is a schistose mixture of quartz and 

 kaolin (?), and may be regarded as belonging to the more highly 

 crystalline series. No. 8, from Mt. Packford, is simply concre- 

 tionary carbonate of lime. 



Sixtv miles further east, and beyond the highest sources of the 

 Gascoyne, is a hill marked Mt. Clere. No. 9, from this place, is a 

 close-grained naggy quartz-grit of a dun colour, which must be 

 regarded as forming part of a sedimentary series but little altered in 

 the direction of crystallization. Forty miles due north of this, at 

 the head waters of the Lyons river, occurs a rock, No. 11 «, which 

 may be described as a sort of yellowish grey phyllade. No. 10, from 

 this district, is an opaque white chalcedony rust- coloured on the 

 exterior, and No. 11 b is opal. 



Quite in another direction, No. 12 is a kind of white flint. The 

 beds from which this is derived may possibly be in the line of the 

 prolongation of Mt. Kennedy Range. 



Palceontology. — There are a few forms of doubtful nature to which 

 no further allusion need be made. The Actinozoa are very fairly 

 represented. Indeed, considering that only one doubtful Cyatho- 

 pJiyllum was known previously from West Australia, the Forrest 

 collection may be regarded as rather rich in this respect, and the 

 specimens are free from matrix and nicely weathered, so that the 

 characters can be made out fairly well. Of the rugose corals (Zoan- 

 tharia rugosa) there are several specimens of what is, in all pro- 

 bability, a new species of Amplexus ; one specimen of an Amplexus 

 which is probably British, but new to Australia ; and one specimen 

 of a Zaphrentis, which may be new. 



Amongst the group of corals, if, indeed, they are corals, which 

 used to be called " tabulate," are several specimens of a branching 

 form of Stenopora, which is probably identical with Stenopora tas- 

 maniensis, Lonsdale. 



All the above fossils are Carboniferous or closely allied to Car- 

 boniferous forms ; but there is just one specimen of the Favositidre, 

 which has a Devonian look about it. Indeed this specimen might 



