Earle,  thanks for the excellent post on Laterite.  It makes sense to me 
that firing the clay will alter its properties.  Also makes sense that 
terra cotta is different than laterite.  I think I'm going to look at 
local pottery supplies and/or this mail-order source, and get me 50 
pounds to share with my fellow Seattle plant enthusiasts (last year I split 
some orders of SAE's...  this year: dirt!).  A $30 minimum order is no 
big deal.. I'd almost just pay them $30 for 50 pounds and say keep the 

     - Erik

Erik D. Olson					At home with the rack o' fish.
eriko at wrq_com (was olson at phys_washington.edu)