1 4 S '&•/< ntifio In l' Uiiji it i ■<■. 



also occurs in the Kurilla Lode, and is doubtless present in the 

 Alain Lode . . . The ealeile and dolomite appear lo have 

 crystallized later than, and enwrap, chalcopyrile, and are, in 

 turn, surrounded by galena. Both the galena, and the blende 

 appear to be among the latest metallic minerals deposited.'' 



H. E. G. 



"). The Geology and Mineral li< sources of the Reefton Stib- 

 division (Westpori and North Westland Divisions) ; by J. Hen- 

 derson. New Zealand (ieol. Survey, Bull. 18, 1917. Pp. viii, 

 232, 11 pis., 22 maps and plans.— Bulletin No. 18 of the New 

 Zealand Survey deals with 1,046 square miles of typical "West 

 Coast" country of the South Island, including mountain, pla- 

 teau, and seacoast, glacial cirques, vigorous rivers, and flood 

 plains. The region is in process of emergence and exhibits a 

 remarkable series of wave-formed terraces and ancient coastal 

 belts which have been correlated with inland terraces standing, 

 respectively, at 10 feet, 80 feet, 200 feet, 320 to 360 feet, and 

 500 feet. The adjustment of drainage incident to these uplifts 

 constitutes an attractive physiographic problem. Faulting on an 

 extensive scale at four periods within Tertiary lime has left its 

 mark in horsts, graben, plateaus, and mineral-bearing fissures. 

 The base of the stratigraphic column is a series of greatly dis- 

 turbed greywaekes and argillites assigned to the Silurian. The 

 Devonian is represented by quartzites, shales, t and fossiliferous 

 limestones. Overlying the Paleozoic strata are Tertiary beds — 

 Eocene, Miocene, and Pliocene. The igneous rocks, of which 19 

 analyses are given, include granite, lamprophyre, camptonile. 

 pyroxenite, and diabase. Gold in quartz veins, most of them 

 deposited from magmatic waters, and coal in the Tertiary strata 

 are responsible for the economic importance of the Reefton area. 

 The chapters on geography and the discussion of scenery in rela- 

 tion to structure are welcome, for publications relating to the 

 geography of New Zealand are inadequate in number and scope. 



H. E. G. 



6. The Vegetation and Flora of Lord Howe Island; by W. R. 

 B. Oliver. Trans. New Zealand Inst., vol. xlix, 1916. Pp. 94- 

 161, pis. 10-16. — Lord Howe Island, a remnant mass of lava and 

 limestone, 3,220 acres in area, occupies an isolated position within 

 a tract of ocean which bounds three biological regions of the 

 globe. Among the 209 species of indigenous plants described by 

 Mr. Oliver are a number which present interesting features of 

 climatic and soil adaptation. The percentage of endemic forms 

 in the whole flora is 33. The history of the flora shows that tin; 

 island formerly had direct connection with New Caledonia and 

 has witnessed the breaking down of the bridges which connected 

 it with now distant land masses. "The plants of Lord Howe 

 Island indicate former land connections with both New Zealand 

 and New Caledonia. The greater degree of peculiarity in the 



