I've put the next installment of "Dr Duarte's Pianola Problems",
as appeared in the PPG September 1999 issue, at :-

    http://website.lineone.net/~agr/fun/duarte2.html

Anyone with pianola problems for the doctor to consider can send
the same via the page.  It's only a joke so please no serious e-mail
enquiries okay!

Have fun!

Adam Ramet