Re: tonal languages?

>I can't find the bit I was looking for, but _Describing Morphosyntax_ (p30)
>says:
>
>  Some languages, especially in Africa and Meso-America, use tone
>modification to signal very common morphological operations like tense and
>aspect.
>
>The book subsequently goes on, in some detail -- as does _Language
>Universals And Linguistic Typology_ -- with examples of the way this works
>in various languages and situations. If I had myself better prepared, I'd
>produce those examples. If anyone's interested, I'll see if I can dig them
>out tomorrow evening.
I'm interested, but don't go to all the work just for my sake.  I'll
eventually be buying _Describing Morphosyntax_.

I've got a tone language to construct and would be interested in hearing
what non-lexical things languages can do with tone, but Nidirino's a
back-burner project - the other two conlangs are much more important at
this stage, and I can only do, say, three things or so at once (and one of
the things I have to be doing is educating my two children.)

I would be interested in hearing a short review from you (if you would be
so kind) of _Language Universals And Linguistic Typology_ to find out
whether this, too, needs to go in my to-buy list.

Isidora