90 GEOLOaT OF THE IN'AERAGAIiJ'SETT BASIK 



the developments are not sufficiently advanced to enable the geologist to 

 prove very helpful to those who desire to exploit its resources. Such 

 indications as are here given are therefore to be regarded as suggestions 

 rather than as definite recommendations; the latter can be safely made 

 only when accurately determined facts, such as are obtained from extensive 

 workings, have been gathered. 



