!8 NEW YORK STATE MUSEUM 



this element was detected. These two tests prove that the Hadley 

 sand does not contain bromid of gold to the value of $7.50 a 

 ton. In just what chemical combination or physical condition the 

 gold could exist in the sand to the value of $7.50 a ton, and would 

 not be detected by the fire assay, but, after undergoing a simple 

 chemical operation, would be susceptible to amalgamation in pay- 

 ing quantities, is a question which remains for the people inter- 

 ested in this process to explain, before the scientific, world, whose 

 confidence rests implicitly on the accuracy of the fire assay, will 

 credit their theory. 



For analyses of sands from Lewis county, which is the scene of 

 present activity in mining, we are indebted to The Engineering & 

 Mining Journal (March 19, 1910) through whose enterprise samples 

 were recently collected and assayed. The samples were taken by 

 B. J. Hatmaker who had previously experimented with sands from 

 the same localities. The following particulars are from Mr Hat- 

 maker's letter transmitting them : 



The samples marked "A" are from an immense deposit along 

 the Black river and represent three samples taken 300 feet apart. 

 These samples gave me, by fire, from $3.59 to $3.80 per ton. The 

 samples marked " B " are from a deposit back in the hills which 

 should run around $3. This particular sample was taken by Pro- 

 fessor Locke, of the Boston Institute of Technology, and myself. 

 It represents the sand of which Dr N. S. Keith, of Philadelphia, 

 has milled several tons and has reported $2.50 to $3 recovery, by 

 amalgamation. My fire assays in this have run $1.50 and $2.75. 

 Professor Locke was unable to get more than a trace. 



The report on the results of assay by the firm of Ricketts & 

 Banks, as printed in The Engineering & Mining Journal, is as 

 follows : 



i The samples of sand marked "A" and " B," received sealed under 

 signature of B. J. Hatmaker, submitted for assay contain: 



"A" "B" 



Fire assay o . 005 oz. o . 005 oz 



Wet assay , o . 005 oz. o . 005 oz 



gold per ton of 2000 pounds. 



Additional samples marked " A " and " B " were also submitted 

 by The Engineering & Mining Journal to the firm of A. R. Ledoiix 

 & Co. who made the following report : 



