BY W. G. WOOLNOUGH. 435 



view obtainable from its summit. As we could not obtain guides, 

 we were forced to give up the attempt. We therefore followed 

 the Waidina River to its source, crossed into the Wainikoroiluva 

 Valley, and followed it and the main Navua River to Navua, 

 thence returning to Suva. 



With a longer time at my disposal, a much improved equip- 

 ment, and a fair working knowledge of the language, and with 

 the results of my former expedition as a basis upon which to 

 work, I have been able to add considerably to the work done 

 previously. Even now I can claim only that a general idea of 

 the geological structure of Viti Levu has been obtained; the salient 

 facts are correct, but the details are subject to modification by 

 future observations. It is only natural that my earlier work 

 requires extensive revision. On the whole, the results of my 

 second exploration of Viti Levu have confirmed the main con- 

 clusions formed by me after m}^ first exploration there, but there 

 are several very important alterations which must be made in it. 

 These will be noted in their proper place. 



Summary of Results of Previous Expedition. 



In my previous paper^' I showed that while the main bulk of 

 the island of Viti Levu is built up of andesitic and basaltic lavas 

 and tuffs, " soapstones," and upraised coral reefs, there are never- 

 theless extensive areas of granitic and slaty rocks. Granitic and 

 slaty rocks being practically confined to continental areas, I 

 sought to show reason why Fiji should be considered as continental 

 in origin. 



The continental rocks were met with in the very centre of the 

 island, extending from Wainiveidroon the upper Wainikoroiluva 

 River to near Udu on the upper Wainimala River, a distance of 

 upwards of thirty miles by track. Slaty rocks were met with 

 near Namoli (called in error Nalaba) on the Sigatoka River, and 

 examination of the river gravels of the island indicated a wide 

 range of distribution for similar rocks. 



* These Proceedings, 1903, Vol. xxviii. pp.457-496, 500-540, Plates xxii.- 

 xxxvi. 



