9^ TRANSACTIONS OF SOCIETIES. 



granite formation. At Forbes Reef, 14 miles north of Embabaan, there are 

 two modes of occurrence ; these may be referred to as in granite and in 

 schist. The Forbes Reef deposits consist entirely of reef tin, and they are 

 probably genetically connected with the intrusion of the granite into the 

 schists. This mode of occurrence is unusual, and suggests the economic 

 possibilities of beds of schists in close proximity to intrusive granite. — 

 " The terraces of Eerste River at Stellenbosch " : Prof. S. J. Shand. 

 Along a certain part of its course the river is boimded by flat alluvial 

 terraces, horizontal in a direction at right angles to the river course, but 

 inclining constantly downstream. The author examined into the conditions 

 under which a silt-charged river may deposit part of its load, and found 

 it chiefly in the confluence, within a small area, of a number of txDrrential 

 streams. When once the alluvium had been deposited, the river com- 

 menced to remove some of the deposit and to establish a new level at a 

 horizon 27 feet lower. Still later, part of this second terrace was carried 

 away, and a third level, six feet lower, established. The present flood level 

 is 12 feet below this. The inference is the elevation of the surrounding 

 area within recent times b}- not more than 50 feet, involving the previous 

 submergence of the isthmus connecting the Cape Peninsula with the main- 

 land and the separation of tlie Peninsula itself into a pair of islands by 

 means of a strait connecting Chapman's Bay with Fish Hoek. 



NEW BOOKS. 



Sander, Dr. L. — GeschicJitc dcr Dciitschoi Kulonial-Gescllschaft fiir 

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1912. loi X 8 in., pp. (vol. [) xxxix, 315, (vol. 2) iv, 477. Maps 

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Nielson, P. — The Matahclc at home. l\\u<. Bulawayo : Davis & Co., 



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Baltzer, F. — Die Erschliessinig Afrilcas durch Eisenbahncn. gh X 6i in., 

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Madan, A. C. — Lahj-Lain!ia-U'isa and English, English and Lahi- 

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Ellenberger, D. F. — History of the Basuto. Ancient and Modern. Med. 

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Junod, Henri A.— The life of a South African Tribe. — //. The Psychic 

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Torday, E. — Camp and Tramp in African IVilds: A record of adven- 

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Scully, W. C. — Reminiscences of a South African Pioneer. 9 X 6 in. pp. 

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Stuart, J.~A history of the Zulu rebellion. 1906, and of Dinisulu's arrest, 

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