Reviews — Canada Department of Mines. 233 



interest of his wanderings. The tract is referred to as Colonial Office, 

 Miscell. No. 283, and as no price is attached can be liad for the asking. 



VIII. — Canada : Department of Mines. 



1. Austin Bbook Ikon-bearing District, New Brunswick. By 

 E. Lindeman. pp. 15, with 3 plates, 5 figures, and 3 maps. 1913. 



rpHIS report is based on a magnetometric survey of the areas, of 

 J_ whicli a preliminary report was issued in 1906. The ore consists 

 of very fine-grained siliceous magnetite mixed with a considerable 

 amount of hematite. It occurs as dyke-like masses in a quartz- 

 porphyry, which is itself intruded into slates, possibly Devonian 

 in age. Analyses are given of eight samples of ore, and there 

 are details of the cores obtained from four borings. The maps 

 accompanying the report include magnetometric and geological maps 

 on a scale of 400 feet to the inch, and a smaller scale map showing 

 the location of the district. 



2. Magnetite Occurrences along the Central Ontario Railway. 

 By E. Lindeman. pp. 23, with 9 plates and 19 maps. 1913. 

 The deposits of magnetite here considered occur between Central 



Ontario Junction and the village of Bancroft, a distance of about 

 60 miles. The greater part of this area is occupied by Archaean 

 rocks, consisting of crystalline limestones, para-gneisses, schists, and 

 araphibolites, intruded by gi'anite, syenite, diorite, and gabbro, and in 

 places overlain by the lowest beds of the Palaeozoic Series. 



The magnetite occurs as irregular masses interbanded with 

 crystalline limestones and schists usually along or near their contacts 

 with intrusive diorite ; they are regarded as a result of the contact 

 action of the igneous rocks on the limestone, as they contain many 

 minerals characteristic of this type of metamorphism. In addition to 

 this there are small occurrences of titaniferous magnetite representing 

 local concentrations in a gabbro. 



The area being largely drift-covered, the careful use of a systematic 

 magnetometric survey has been of the greatest value. The report is 

 accompanied by eighteen maps, magnetometric and geological, on 

 a scale of 200 feet to the inch, and by an index map showing the 

 location of the deposits. The various deposits and mines are described 

 in detail, but there seems little hope of any of the deposits being of 

 great economic importance. 



E.EFOE.TS .A.nsriD ZPE-OCEEIDinSTGrS- 



I. — Geological Society of London. 



1. Felruanj 25, 1914.— Dr. A. Smith Woodward, F.R.S., President, 



in the Chair. 



The following communications were read : — 



1. "Acid and Intermediate Intrusions and Associated Ash- 

 Necks in the Neighbourhood of Melrose (Roxburghshire)." By 



