Hi Randy  
I wrote:

(which is a nice 1 cal/g/degree by definition in the rational metric system).

Well, I have to apologize that for that unwarranted friendly dig.  I thought you were using some kind of BTU units.  Turns out that I am actually the dinosaur.  My son (a windmill engineer) is always telling me to expand my consciousness and start thinking in terms of joules and watts (universal) instead of calories.  But the reference I found was in calories.

As to insulation (or inverse of heat conductivity):  It would seem to me that whatever the value of honey, it is the airspace between the combs that provides most insulation.  The factor here that is important is how much convection happens (because it is dead air space that insulates).  Air trapped in cells in empty comb must be a significant advantage, but also, the amount of burr comb at the top and bottom of the frames would be an important factor.   Bees likely regulate the latter to some extent in response to environment if we beekeepers don`t overly destroy their work in our manipulations.

Stan

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