correction (Re: Dark reaction)

[Katharine Thayer <kthayer@pacifier.com>]

On Oct 29, 2009, at 7:02 AM, Katharine Thayer wrote:

>   A graph illustrating the relationship between relative humidity  
> and time in hours required to produce a specific degree of  
> hardening in a dichromated gum layer,  shows the dark reaction  
> taking 1100 hours at 50% RH and 0 hours at 85% RH.
Slip of the finger:  that should read *110* hours at 50% RH, not 100  
hours.  The relationship is steep, but not THAT steep.  Sorry, about  
that.