Revietcs — Melbourne National 3Iuseum. 477 



of iron, and are now in places represented by the bands of laminated 

 quartzite and the very ferruginous jaspers, which make a pronounced 

 feature in the field. Associated with the metamorphic sedimentary 

 rocks (some of which are conglomeratic) is a large area of 

 amphibolites, which appears to be embedded with the former; as 

 some of these are distinctly amygdaloidal, there seems very good 

 reason for believing them to be ancient lava-flows. In addition to 

 the amphibolites are a series of diorites and epidiorites, which are 

 apparently interbedded with the sedimentary rocks and amphibolites 

 in such a manner as to suggest the possibility of their being 

 intrusive sills and dykes. Another very important feature is the 

 occurrence of a large number of quartz-porphyry dykes, which 

 traverse the whole of the area mapped in a general north-east and 

 south-west direction. These porphyry dykes in all probability form 

 the apophyses of the large granite mass which lies to the east of, 

 and just outside, the limits of the area mapped. 



Although the Norseman district affords no direct evidence as to 

 the geological age of its older basic and acidic rocks, there is good 

 reason to suppose that they all form part of the same series as those 

 which are so largely developed in other parts of the Eastern 

 Goldfields. 



Norseman has proved a good mining field, the auriferous quartz 

 reefs being distributed over a large extent of country. Many of 

 the reefs are very rich in gold. Up to the end of 1904 the area 

 embraced by Mr. Campbell's labours has produced 266,004 oz. of 

 gold, or at the rate of 1,019 oz. for every ton of ore crushed. The 

 superficial deposits have yielded only a limited amount of alluvial 

 gold, the total reported from 1899 to 1904 being 1662-37 oz. 



This report contains much valuable information relating to the 

 history, topography, water supply, and other details of the district 

 covered. There are also tables of analyses, lists of mineral and 

 geological specimens, and an index to the names of places, mines, 

 leases, reefs, etc. A. H, F. 



IV. — Memoirs of the National Museum, Melbourne. No. I r 

 On a Carboniferous Fish Fauna from the Mansfield District, 

 Victoria. By Arthur Smith Woodward, LL.D., F.E.S. 8vo ; 

 pp. 1-32, 11 plates. (Melbourne, January, 1906.) 



THIS interesting memoir contains a description of a collection, 

 made in 1888, at the request of the late Sir Frederick McCoy, 

 by Mr. George Sweet, F.G.S. The specimens, which are in a very 

 imperfect state of preservation, were originally described by McCoy, 

 who selected with great judgment the material for the plates which 

 accompany the memoir. His preliminary determinations (Rep. on 

 Palseont. for 1889, Victoria: Ann. Eep. Sec. Mines, 1889 (1890), 

 pp. 23-24) and his conclusions as to the affinities of the fish-fauna 

 prove, however, to have been almost entirely erroneous. Far from 

 displaying a "mixture of Lower Devonian, and types related to 



