I love this "invisible college" we have set up here? Peter Steere, one of
our HISTARCH members, sent me a note that he had seen sand being laid under
tiles as both a means of drainage and a way of leveling the floor (at least in
the later nineteenth century). Thank you, Peter!
 
Anita Cohen-Williams; Reference Services; Hayden Library
Arizona State University, Tempe, AZ  85287-1006
PHONE: (602) 965-4579              FAX: (602) 965-9169
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