NOTES ON GOLD. 41 
Mint, Professor Chandler Roberts, F.R.S., with the result that it 
was found to be absolutely fine, and since the process by which it 
became so is a ~ ee short and simple one, I was very glad of seeing 
it so su 
Volatilization of Gold.—On this subject a vast amount of 
ces have from time to time appeared in print, and the slight 
“olbtllity of gold under certain 
The erection of a scaffolding round the Mint chimney, pre paratory 
to its being repaired, enabled me to get some of the stuff which 
stuff, of which, however, there was but little, was found to contain 
in 235 s of sweep, 3°424 grains of gold and 14°242 grains of 
silver, or about 1-46 per cent. gold and 6-06 per cent. silver. The 
gold could be seen under the microscope. e horizontal flues in 
front of the melting furnaces, as well as the sais of the chimney to 
pecim 
native silver from the Boorook mine, which I have brought here 
or your inspection. 
