xii 



THE GEOLOGIST. 



of the earth's structure, for reasons more than once ex- 

 plained. 



Lastly, we would briefly advert to the triune system 

 of classification, which we have endeavoured to adapt to the 

 science of mineralogy, with the same intents as those to 

 which we now draw attentioii, hoping that chemists will be 

 induced thereby to aid mineralogists in this department of 

 research ; which, from the present state of the science, and 

 the discoveries made from time to time, will, we are sure, 

 amply repay the labour. 



The Editor. 



