First off, thanks Tony for your response. 
 
        Let me specify the question.  Does neutrality mean  
neutrality with respect to the general level of prices and the level of  
annual macroeconomic output, or does it mean neutrality with  
respect to relative prices and the internal structure of the economy? 
If, both, how are the two related, if at all?  
 
        It is not clear from the citation from Hume what his answers  
to these questions would be. 
 
Robin Neill