270 INDEX 



Wright, C. S., i. 145, 315 Zagros Hills, i. 317 



Wright Glacier, i. 87 Zeuglodon, i. 314 



Zerion, i. 245 



Zircon, ii. 99, 105, 140, 162, 166, 174, 211, 224 

 Xenocrysts, ii. 144 Zirconia, ii. Ill 



Xenolith, ii. 144, 176 Zululand quartz-dolerites, i. 308 



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