[Cob] Stone in cob

[Elizabeth Fox]

My two cents worth is this:  When building with both materials together, visualize how each will stand up by themselves.  

That is, don't make a leaning stone wall and hope the cob will keep it in place, and don't make a crooked cob wall hoping the stones will give it strength.  (I would not expect a cob wall to hold much more than small pieces of tile embedded in its surface.)As with the brick wall mentioned in another response, proper layers of each will hold up fine.

Again, if each material is visualized holding up as elements independent of eachother then the composite should do fine.

Beth
--
9 Point Development 
Creating Earth-friendly Houses 
that Support Sustainable Lifestyles 

"Tidiness is maintained disorder" 
-Bill Mollison, 
co-founder of Permaculture