O'Beilly — Notes on some Assays for Gold, etc. 459 



the Mining Journal of December 28, 1889, p. 1484. The Chair- 

 man made the following statement: — "Our process does not cost 

 you £4, nor 30s., but we claim that by it we can do it for Is. per 

 ton, which will have the effect of making non-paying mines pay." 

 It is evident, therefore, that the tendency will be to reduce by 

 various improvements the cost of treatment of gold ores, so that 

 many rocks, now not workable because of their low grade in metal, 

 may be treated, and thus enable a mine to be developed, so as to 

 give access to richer and more productive parts. The knowledge 

 of the existence of such low grade minerals is, therefore, already 

 of importance, as hereafter they may be found capable of advanta- 

 geous treatment. Hence, careful assays of all such rocks may be 

 considered as pioneering work of real value for the future mineral 

 interests of the country. 



